Closer and knotting system

Abstract

The present application relates to the technical field of medical instruments and provides a closer and a knotting system. The closer comprises a closure nail, an acting piece, and a transmission piece. The closure nail comprises one end and the other end and is further provided with a thread passing channel penetrating through the one end and the other end, and the closure nail has an outer wall surface; the acting piece comprises a through hole, the through hole penetrates through two end surfaces of the acting piece, and the through hole has an inner wall surface; the transmission piece can push the acting piece to move in a first direction. The outer wall surface and / or the inner wall surface are provided with a transmission inclined surface, the transmission inclined surface converts the pressure of the acting piece in the first direction into a compressive force on the closure nail, so that the closure nail accommodated in the through hole is compressed, and a suture line between the outer wall surface and the inner wall surface is cut off while the thread passing channel of the closure nail is compressed tight. This design eliminates the need for a set of thread-cutting mechanism and a matched control transmission mechanism, while ensuring both suture line tight compressing and thread cutting. Additionally, it reduces the occurrence of knotting failures.

Description

Closure and knotting system TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a closure and knotting system. BACKGROUND

[0002] With the development of minimally invasive surgery technology, minimally invasive surgery has become a hot technology actively developed by various surgical departments due to its small incision, small risk and fast recovery. In minimally invasive surgery, simple and fast postoperative suturing and knotting operations need to be achieved. The knotting methods used in clinical practice include manual knotting and instrument knotting.

[0003] The existing surgical closure device generally causes plastic deformation of the clamping part by punching and shearing to clamp the suture line therein, and then cuts off the suture line outside the clamping part by a cutting knife or a shearing knife to complete knotting.

[0004] A remote-operated closure device in the prior art adopts a scheme of combining radial compression with a line cutter due to remote knotting, and needs two sets of actuating mechanisms to realize compression and line cutting respectively. The two sets of mechanisms bring about a complex structure, and in addition, the timing of interaction of the two sets of mechanisms needs to be strictly controlled, otherwise the problem of line cutting without compression may occur, leading to failure of suture line knotting, and at the same time, the risk of surgical failure due to premature line cutting may also occur. SUMMARY

[0005] To overcome the problems of complex structure and unstable success rate of the existing closure device in the related art, the present specification provides a closure device and knotting system capable of simplifying the structure.

[0006] According to a first aspect of the embodiments of the present specification, a closure device is provided, comprising a closure nail, an acting part and a transmission part; the closure nail comprises one end and the other end, and further has a wire passing channel penetrating through the one end and the other end, and the closure nail has an outer wall surface; the acting part comprises a through hole penetrating through two end surfaces of the acting part, and the through hole has an inner wall surface; the transmission part can push the acting part to move in a first direction; wherein the outer wall surface and / or the inner wall surface is provided with a transmission inclined surface, so that the transmission inclined surface converts the pressure of the acting part in the first direction into extrusion pressure on the closure nail, so as to extrude the closure nail assembled in the through hole, and cut the suture line between the outer wall surface and the inner wall surface while or after compressing the wire passing channel of the closure nail.

[0007] According to the embodiments of the present application, the slope of the transmission inclined surface is between 5 degrees and 30 degrees; or the minimum diameter of the inner wall surface is between 3 / 4 and 1 / 2 of the minimum diameter of the outer wall surface. It can ensure the compression of the suture line, and at the same time, it can ensure the cutting of the suture line.

[0008] According to the embodiment of the present application, the opening of the inner wall surface is further provided with an assembly section, and the second end of the closure nail is positioned and assembled by the assembly section. The closure nail is positioned and oriented to avoid bias.

[0009] According to the embodiment of the present application, the closure nail is further provided with a deformation slot, the deformation slot extends a first distance in the first direction from the second end, and the width of the deformation slot is smaller than the diameter of the suture. The deformation of the closure nail can reduce the pressure, thereby saving the operation force.

[0010] According to the embodiment of the present application, the closure nail is further provided with a wire passing opening, the wire passing opening extends a second distance in the first direction from the second end, the width of the wire passing opening is greater than or equal to the diameter of the suture, and the bottom of the wire passing opening is provided with a wire cutting portion. The wire passing opening can avoid cutting the wire in the initial compression stage, and when deformed to the middle stage, the wire cutting portion cooperates with the pressing surface to cut the wire, which can ensure that the wire is cut after compression.

[0011] According to the embodiment of the present application, the wire cutting portion includes a stepped slot and a wire cutting edge on the outer circumferential surface of the closure nail. The stepped slot can be used for secondary compression, and the wire cutting edge is located on the outside, which is more convenient for completely cutting the suture.

[0012] According to the embodiment of the present application, the acting member is provided with a cutting edge portion corresponding to the wire cutting portion of the closure nail, the cutting edge portion is arranged at the bottom of the opening facing the closure nail, and the position of the cutting edge portion corresponds to the wire cutting portion of the closure nail. Cooperating with the wire cutting portion of the closure nail can improve the cutting rate.

[0013] According to the embodiment of the present application, the bottom of the acting member is provided with a cutting edge portion, the cutting edge portion is arranged at one end of the inner wall of the acting member facing the closure nail, and the cutting edge portion is a ring blade structure with an acute cross section. Cooperating with the wire cutting portion of the closure nail, alignment is not required, which reduces the difficulty of assembly and use.

[0014] According to the embodiment of the present application, the closure nail is further provided with a wire passing opening, the wire passing opening is arranged on the outer wall of the closure nail, and the wire passing opening is an opening extending in the first direction.

[0015] According to the embodiment of the present application, the closure nail is further provided with an inner wire cutting portion, the inner wire cutting portion is arranged at the inner wall of the second end of the closure nail, and the inner wire cutting portion is a convex rib with an acute cross section. The suture in the wire passing channel can be cut while or after being compressed by the convex rib, the cutting effect is more direct, and the cutting effect can be ensured.

[0016] According to the embodiment of the present application, the front end of the transmission member has a reduced diameter portion, the rear end of the reduced diameter portion is a ring edge, and correspondingly, the inner cavity of the pressure contact device has a positioning section, a tapered surface section, and an action section, the inner diameter of the action section is larger than that of the positioning section, the reduced diameter portion of the push rod has a sliding stroke in the positioning section, and the sliding stroke completes the compression of the closure nail, and after the ring edge of the push rod opens the tapered surface section, the pressure contact device is opened to release the positioning of the closure nail.

[0017] According to the embodiment of the present application, there is also a terminal compression portion, which is arranged at one end of the outer wall surface of the closure nail, or the terminal compression portion is arranged at the inner wall surface of the action member at the second end, so as to form a plurality of compression points for effective shearing line action.

[0018] According to the embodiment of the present application, there is also a knot fixing portion, which is at least two through-holes arranged on the outer wall of the action member.

[0019] Another aspect of the present application provides a knotting system, which comprises a controller, a sleeve, and a closer as described in any one of the preceding embodiments, the closer is arranged in the distal end of the sleeve, and the controller is arranged in the proximal end of the sleeve.

[0020] The technical effect of the embodiment of the present application compared with the prior art is that the through-hole of the closure nail is used to compress the suture passing through the through-hole after being deformed under pressure, and the suture passing through the through-hole can be sheared synchronously in the process of implementing the compression of the closure nail by the outer wall surface and the inner wall surface, so that the shearing can be implemented at the same time or after the compression of the suture, which can reduce a set of shearing mechanism and a matching control transmission mechanism, and also can ensure that the shearing is implemented at the same time or after the compression of the suture, and reduce the failure of knotting.

[0021] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present description and serve to explain the principles of the present description. FIG. 1 is a perspective view of a closer according to a first embodiment of the present application. FIG. 2 is an enlarged view of the portion A in FIG. 1. FIG. 3 is a sectional view of a combination of a closing nail and a working element of a closer according to the first embodiment of the present application. FIG. 4 is a perspective view of a combination of a closing nail and a working element of a closer according to the first embodiment of the present application. FIG. 5 is a view of a closing step of two embodiments of a closer according to the first embodiment of the present application. FIG. 6 is a sectional view of a combination of a closing nail and a working element of a closer according to a second embodiment of the present application. FIG. 7 is a perspective view of a combination of a closing nail and a working element of a closer according to the second embodiment of the present application. FIG. 8 is a view of a closing step of a closer according to the second embodiment of the present application. FIG. 9 is a sectional view of a combination of a closing nail and a working element of a closer according to a third embodiment of the present application. FIG. 10 is a view of a closing step of a closer according to the third embodiment of the present application. FIG. 11 is a sectional view of a combination of a closing nail and a working element of a closer according to a fourth embodiment of the present application. FIG. 12 is a view of a closing step of a closer according to the fourth embodiment of the present application. FIG. 13 is a sectional view of a combination of a closing nail and a working element of a closer according to a fifth embodiment of the present application. FIG. 14 is a view of a closing step of a closer according to the fifth embodiment of the present application. FIG. 15 is a sectional view of a combination of a closing nail and a working element of a closer according to a sixth embodiment of the present application. FIG. 16 is a view of a closing step of a closer according to the sixth embodiment of the present application. FIG. 17 is a perspective view of a closing nail of a closer according to a seventh embodiment of the present application. FIG. 18 is a view of a closing step of a closer according to the seventh embodiment of the present application. FIG. 19 is a sectional view of a combination of a closing nail and a working element of a closer according to an eighth embodiment of the present application. FIG. 20 is a view of a closing step of a closer according to the eighth embodiment of the present application. FIG. 21 is a sectional view of a combination of a closing nail and a working element of a closer according to a ninth embodiment of the present application. FIG. 22 is a view of a closing step of a closer according to the ninth embodiment of the present application. FIG. 23 is a sectional view of a combination of a closing nail and a working element of a closer according to a tenth embodiment of the present application. FIG. 24 is a view of a closing step of a closer according to the tenth embodiment of the present application. FIG. 25 is a sectional view of a combination of a closing nail and a working element of a closer according to an eleventh embodiment of the present application.FIG. 26 is a schematic view of a closing step of a closure device according to an eleventh embodiment of the present application. FIG. 27 is a schematic view of a combined cross-sectional structure of a closing staple and an acting member of a closure device according to a twelfth embodiment of the present application. FIG. 28 is a schematic view of a closing step of a closure device according to the twelfth embodiment of the present application. FIG. 29 is a schematic view of a combined cross-sectional structure of a closing staple and an acting member of a closure device according to a thirteenth embodiment of the present application. FIG. 30 is a schematic view of another threading mode of a combined cross-sectional structure of a closing staple and an acting member of a closure device according to the thirteenth embodiment of the present application. Reference numeral 1: closing staple; 10: outer wall surface; 11: threading passage; 12: one end; 13: another end; 15: deformed slit; 16: stepped slot; 17: tangent cutting portion; 18: threading opening; 19: threading opening; IX: inner cutting portion; 101: acting surface; 102: root annular protrusion; 2: acting member; 20: inner wall surface; 21: through hole; 22: first end; 23: second end; 24: fitting section; 25: cutting edge portion; 26: opening; 201: annular protrusion; 2Y: first opening; 2Z: second opening; 3: transmission member; 31: reduced diameter portion; 32: annular ridge; X: first direction; X1: first pressing point; X2: second pressing point; 4: sleeve; 41: threading hole; 5: pressure contact device; 6: controller. DETAILED DESCRIPTION

[0023] The exemplary embodiments will be described in detail herein below with reference to the accompanying drawings. In the following description, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are not representative of all embodiments consistent with the present specification. Rather, they are merely examples of devices and methods consistent with some aspects of the present specification as detailed in the appended claims.

[0024] The terms used in the present specification are merely for the purpose of describing particular embodiments and are not intended to limit the present specification. As used in the present specification and the appended claims, singular forms "a," "an," and "the" are intended to include plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] To overcome the problems of the existing closure device in the related art, such as the complicated closing action structure and the unstable closing success rate, the present specification provides a closure device and knotting system with a simplified structure and improved suture closing rate in a remote surgery operation.

[0026] Next, the embodiments of the present specification will be described in detail. First Embodiment

[0027] Fig. 1 is a perspective view of a closer according to a first embodiment of the present application, Fig. 2 is an enlarged view of A in Fig. 1, Fig. 3 is a sectional view of a combination of a closing nail and an acting member of a closer according to the first embodiment of the present application, Fig. 4 is a perspective view of a combination of a closing nail and an acting member of a closer according to the first embodiment of the present application, and Fig. 5 is a schematic view of a closing step of two embodiments of a closer according to the first embodiment of the present application.

[0028] Referring to the drawings, the first embodiment of the present application provides a closer, which mainly comprises a closing nail 1, an acting member 2 and a transmission member 3. The closing nail 1 comprises one end 12 and another end 13, and has a wire passage 11 penetrating through the one end 12 and the another end 13, and the closing nail 1 has an outer wall surface 10. The acting member 2 comprises a through hole 21, and the acting member 2 comprises a first end 22 and a second end 23, and the through hole 21 penetrates through the first end 22 and the second end 23 of the acting member 2, and the through hole 21 has an inner wall surface 20; and in operation, the acting member 2 can be pushed to move in a first direction X by the transmission member 3.

[0029] In the first embodiment, a transmission inclined surface is arranged on the inner wall surface 20 of the acting member 2, and the transmission inclined surface converts the pressure of the acting member 2 in the first direction X into extrusion pressure on the closing nail 1, so as to extrude the closing nail 1 assembled in the through hole 21, and at the same time or after the wire passage 11 of the closing nail 1 is compressed, the outer wall surface 10 and the inner wall surface 20 are cut off by the friction and cutting between them.

[0030] As shown in the drawings, the transmission inclined surface of the inner wall surface 20 can be arranged as an inner tapered surface, so as to integrate the inner wall surface 20 and the transmission inclined surface. It is obvious for those skilled in the art that the transmission inclined surface can also be one or more wedge-shaped blocks with inclined surfaces on the inner side (facing the through hole), and the wedge-shaped blocks can be integrally formed on the inner wall surface 20 or combined with the inner wall surface 20 after being formed.

[0031] In the embodiment of the present application, the wire passage 11 of the closing nail is compressed and deformed after the suture wire passing through it is compressed, and the outer wall surface 10 and the inner wall surface 20 can simultaneously cut off the suture wire passing through the wire passage 11 in the process of implementing the closing nail compression. Thus, the suture wire can be cut off at the same time or after it is compressed, which can reduce a set of wire cutting mechanism and a supporting control transmission mechanism, and also can ensure that the suture wire is cut off at the same time or after it is compressed. Since the two actions are dependent on each other, the suture wire is compressed first and then cut off, so that the situation of knot failure is reduced.

[0032] In the embodiments of the present application, the closure nail 1 can be subjected to material treatment by complete annealing, and the hardness can be controlled to be 100-200 HV, while the acting member 2 can be subjected to material treatment by a heat treatment process (such as incomplete annealing, normalizing, quenching), and the hardness can be controlled to be greater than that of the closure nail 1, so as to prevent the acting member 2 from deforming prior to the closure nail 1 during extrusion, for example, the hardness of the acting member 2 should be greater than 200 HV. After the heat treatment of the acting member 2, the hardness is relatively high, and materials such as 304 stainless steel, 316L stainless steel, medical titanium, nickel-titanium alloy, stainless steel, titanium alloy material, and degradable magnesium-based metal material can be selected; while after the heat treatment of the closure nail 1, the hardness is relatively low, and materials such as 304 stainless steel, 316L stainless steel, medical titanium, nickel-titanium alloy, stainless steel, titanium alloy material, and degradable magnesium-based metal material can be selected. The closure nail 1 and the acting member 2 can be made of different materials.

[0033] In the first embodiment of the present application, the maximum inner diameter of the through hole 21 of the acting member 2 at the first end 22 can be equal to or slightly greater than the outer diameter of the closure nail 1 at the other end 13, so that the other end 13 of the closure nail 1 can be assembled into the first end 22 of the through hole 21 of the acting member 2. Further, the opening of the inner wall surface 20 also has an assembly section 24, which can be an axial constant-diameter section capable of being sleeved outside the other end 13 of the closure nail 1, so as to position and assemble the other end 13 of the closure nail 1 by the assembly section 24, thereby avoiding the occurrence of deviation from the axial direction during the pressing action. The assembly section 24 can position and orient the closure nail 1, avoid biasing, and thus improve stability and success rate. The assembly section 24 and the inner wall surface 20 are connected by an intersection edge 211, which can be the starting point of the transmission inclined surface.

[0034] In the embodiments, as shown in FIG. 4, the shape of the closure nail 1 can be selected to be a circular flange, so that the closure nail 1 is also provided with a flange edge 14 for positioning at the one end 12. The acting member 2 can be selected to be a matching middle-opening cylindrical body, and the circular matching member has the advantages of easy processing and convenient assembly, and has no directional restriction in assembly.

[0035] According to the embodiments of the present application, the slope of the transmission inclined surface of the inner wall surface 20 can be selected to be between 5 degrees and 30 degrees. With this angle, the conversion ratio of the movement of the acting member 2 in the X direction to the radial pressure can be greater than 2, and more specifically, the slope of the transmission inclined surface of the inner wall surface 20 can be selected to be between 5 degrees and 15 degrees, for example, about 11 degrees as shown in the figure. The above preferred slope range can ensure that the conversion ratio of the movement of the acting member 2 in the X direction to the radial pressure can be greater than 4, and can ensure sufficient pressing force. On the other hand, the minimum inner diameter of the inner wall surface 20 is between 3 / 4 and 1 / 2 of the minimum outer diameter of the outer wall surface 10. In this way, in cooperation with the above slope range, the closure nail 1 can be smoothly pressed into place, the pressing can be ensured, and the shearing can be ensured.

[0036] Referring to the example shown in Figure 5, the closer of the first embodiment of the application can have two operation schemes in the implementation process, such as the first operation method shown in part A of Figure 5, and the second operation method shown in part B of Figure 5. The difference between the two is whether the two open ends are placed on the same side or on the opposite sides.

[0037] First step, pre-fix the suture; the two open ends of the suture 9 to be knotted and fixed are passed through the wire passage 11 of the closure nail 1 from one end 12 to the other end 13, and placed outside the closure nail 1 on opposite sides, or can also be placed on the same side.

[0038] Second step, pre-position the closure nail; align the other end 13 of the closure nail 1 with the fitting section 24 and fit it into it, to pre-position the closure nail 1 in the effector 2.

[0039] Third step, preliminary pressing of the closure nail; push the effector 2 to move in the first direction X, and convert the movement of the effector 2 into radial extrusion force on the closure nail 1 by using the transmission slope. As shown in the figure, during the pressing, the first pressing point X1 and the second pressing point X2 are formed between the outer wall surface 10 and the inner wall surface 20, and the cutting action is performed during or after the pressing. In particular, in this embodiment, the first pressing point X1 is directly matched with the guide slope of the inner wall surface 20 by the front end angle of the outer wall surface 10, which has greater pressure to be converted into cutting force, so that the suture can be effectively cut. The second pressing point X2 located at the root has relatively smaller pressure in this embodiment, but also has a certain pressure, which can be used to limit the open end of the suture, thereby cooperating with the first pressing point X1 to provide tension and improve the cutting rate.

[0040] Fourth step, cutting the suture after the effector 2 presses the closure nail 1 tightly; the wire passage 11 of the closure nail is deformed under pressure after the suture passing through it is pressed tightly, and the outer wall surface 10 and the inner wall surface 20 can simultaneously cut the suture passing through the wire passage 11 during the implementation of the closure nail pressing. In this way, the cutting can be performed simultaneously or after the suture is pressed tightly, which can reduce a set of cutting mechanism and supporting control transmission mechanism. At the same time, since the cutting action is performed during or after the closure nail 1 is pressed tightly, it can also ensure that the cutting is performed simultaneously or after the suture is pressed tightly, because the two actions are attached in sequence, the suture is pressed tightly first and then the cutting occurs, so that the knotting failure is reduced;

[0041] Fifth step, push to the right position and complete the knotting.

[0042] According to the embodiment of the present application, the sleeve 4 is provided with a threading hole 41 corresponding to the position of the closure nail 1 on the side surface, so that the thread end of the suture thread can be threaded out. The sleeve 4 is provided with a tubular pressure connector 5. The front end of the pressure connector 5 is a positioning part that can be opened and closed, so as to position the closure nail 1. The front end of the transmission member 3 is provided with a reduced diameter part 31. The rear end of the reduced diameter part 31 is provided with a ring rib 32. Correspondingly, the inner cavity of the pressure connector 5 is provided with a positioning section, a tapered section and an action section. The inner diameter of the action section is greater than that of the positioning section. The reduced diameter part 31 of the transmission member 3 has a sliding stroke in the positioning section. The sliding stroke completes the compression of the closure nail 1. After the ring rib 32 of the transmission member 3 pushes open the tapered section, the pressure connector can be opened to release the positioning of the closure nail 1. Second embodiment

[0043] Fig. 6 is a combined cross-sectional structure schematic diagram of the closure nail and the acting member of a closure device according to the second embodiment of the present application. Fig. 7 is a combined perspective structure schematic diagram of the closure nail and the acting member of a closure device according to the second embodiment of the present application. Fig. 8 is a closure step schematic diagram of a closure device according to the second embodiment of the present application.

[0044] Referring to the drawings, the second embodiment of the present application provides a closure device, which mainly comprises a closure nail 1 and an acting member 2. The closure nail 1 comprises one end 12 and the other end 13, and further comprises a wire passing channel 11 penetrating through the one end 12 and the other end 13. The closure nail 1 is provided with an outer wall surface 10. The acting member 2 comprises a through hole 21. The acting member 2 comprises a first end 22 and a second end 23. The through hole 21 penetrates through the first end 22 and the second end 23 of the acting member 2. The through hole 21 is provided with an inner wall surface 20. In operation, the acting member 2 can be driven by a transmission member 3 to move in a first direction X.

[0045] The main difference between the closure device of the second embodiment and the first embodiment is that the transmission slope is arranged on the outer wall surface 10 of the closure nail 1. As shown in the drawings, the transmission slope of the outer wall surface 10 can be arranged as an outer conical surface, so that the outer wall surface 10 and the transmission slope are integrated. It is obvious for those skilled in the art that the transmission slope can also be one or more wedge-shaped blocks with a slope on the outer side. The wedge-shaped blocks can be integrally formed on the outer wall surface 10 or combined with the outer wall surface 10 after being formed.

[0046] On the other hand, the closure nail 1 is provided with a constant diameter section (or referred to as a cylindrical section) at the other end 13, which is used as an assembly section. In this way, the closure nail 1 can be assembled and positioned in the acting member 2. Therefore, it is obvious for those skilled in the art that the assembly section of other embodiments of the present application can also be arranged on this side of the closure nail, or the assembly section can be arranged on both the acting member and the closure nail.

[0047] Referring to the schematic shown in Figure 8, the closer of the second embodiment of the present application can have various operation schemes in the implementation process, although only one of the operation methods is shown in Figure 8, and those skilled in the art can obviously understand that the two open line ends can be placed on the same side or on the opposite sides.

[0048] First step, pre-fix the suture; the two open line ends of the suture 9 to be knotted and fixed can be threaded through the wire passage 11 of the closure nail 1 from one end 12 to the other end 13, and the two open line ends can be placed on the same side of the closure nail 1 or on the opposite sides.

[0049] Second step, pre-position the closure nail; the other end 13 of the closure nail 1 is assembled with the segment alignment acting member 2 and is loaded into it, so as to pre-position the closure nail 1 in the acting member 2.

[0050] Third step, preliminary pressing of the closure nail; the acting member 2 is pushed to move in the first direction X, and the movement of the acting member 2 is converted into a radial extrusion force on the closure nail 1 by using the transmission slope; as shown in the figure, during the pressing, the first pressing point X1 and the second pressing point X2 are formed between the outer wall surface 10 and the inner wall surface 20, and the line cutting action is performed during or after the pressing. In particular, in this embodiment, the second pressing point X2 is directly matched with the leading corner of the inner wall surface 20 by using the guide slope of the outer wall surface 10, which has greater pressure to be converted into the line cutting force, so as to effectively cut the suture. The first pressing point X1 located at the top end has relatively smaller pressure in this embodiment, but also has a certain pressure, which can be used to limit the open end of the suture, so as to cooperate with the second pressing point X2 to provide tensioning force and improve the cutting rate.

[0051] Fourth step, cutting the suture after the acting member 2 is pressed against the closure nail 1; the wire passage 11 of the closure nail is pressed and deformed after the suture passing through it is pressed, and the suture passing through the wire passage 11 can be cut synchronously during the implementation of the closure nail pressing by using the outer wall surface 10 and the inner wall surface 20. In this way, the cutting can be performed simultaneously or after the suture is pressed, which can reduce a set of line cutting mechanism and a supporting control transmission mechanism. Since the line cutting action is performed during or after the closure nail 1 is pressed, it is ensured that the suture is cut simultaneously or after the suture is pressed. Since the two actions are sequentially dependent, the suture is pressed first and then cut, so as to reduce the failure of knotting.

[0052] Fifth step, pushing to the position and completing the knotting.

[0053] Figure 9 is a combined cross-sectional structure schematic of the closure nail and the acting member of a closer according to the third embodiment of the present application, and Figure 10 is a closing step schematic of a closer according to the third embodiment of the present application.

[0054] Referring to the schematic shown in the figure, the third embodiment of the present application provides a closer, mainly including a closer nail 1 and an acting member 2. The closer nail 1 includes one end 12 and the other end 13, and has a wire passage 11 through the one end 12 and the other end 13, and the closer nail 1 has an outer wall surface 10. The acting member 2 includes a through hole 21, and the acting member 2 includes a first end 22 and a second end 23, and the through hole 21 penetrates the first end 22 and the second end 23 of the acting member 2, and the through hole 21 has an inner wall surface 20; and in operation, the acting member 2 can be pushed to move in the first direction X by using the transmission member 3.

[0055] The main difference between the closer of the third embodiment and the first embodiment is that the closer nail 1 is provided with a deformation seam 15 at the other end 13, the deformation seam 15 extends from the other end 13 in the first direction by a first distance, and the width of the deformation seam 15 is smaller than the diameter of the applicable suture. The first distance can be between 1 / 4 and 1 / 2 of the axial height of the closer nail 1. The deformation seam 15 can deform the closer nail to reduce the pressure, thereby saving the operating force.

[0056] On the other hand, the fitting section 24 of the acting member 2 is a section of inner cone, which can facilitate the rapid assembly of the other end 13 of the closer nail 1.

[0057] Referring to the schematic shown in Figure 10, the closer of the third embodiment of the present application can have various operation schemes in the implementation process, although only one of the operation methods is shown in Figure 10, and those skilled in the art can obviously understand that the two open wire ends can be placed on the two sides or the same side.

[0058] The operation steps of the closer of the third embodiment of the present application are basically the same as those of the foregoing embodiments, wherein the wire cutting action point is mainly the first pressing point X1, and the second pressing point X2 located at the root has relatively smaller pressure in this embodiment, but also has a certain pressure, which can be used to limit the open end of the suture, thereby cooperating with the first pressing point X1 to provide tensioning force and improve the cutting rate.

[0059] Figure 11 is a combined cross-sectional structure schematic diagram of a closer nail and an acting member of a closer according to the fourth embodiment of the present application, and Figure 12 is a closing step schematic diagram of a closer according to the fourth embodiment of the present application.

[0060] Referring to the schematic shown in the figure, the fourth embodiment of the present application provides a closer, mainly including a closer nail 1 and an acting member 2. The closer nail 1 includes one end 12 and the other end 13, and has a wire passing channel 11 through the one end 12 and the other end 13, and the closer nail 1 has an outer wall surface 10. The acting member 2 includes a through hole 21, and the acting member 2 includes a first end 22 and a second end 23, and the through hole 21 passes through the first end 22 and the second end 23 of the acting member 2, and the through hole 21 has an inner wall surface 20; and in operation, the acting member 2 can be pushed to move in the first direction X by using the transmission member 3.

[0061] The main difference between the closer of the fourth embodiment and the first embodiment is that the closer nail 1 is further provided with a plurality of wire passing openings 19, here the wire passing openings 19 are evenly distributed 4, the wire passing openings 19 extend a second distance in the first direction from the second end, the width of the wire passing openings 19 is greater than or equal to the diameter of the applicable suture, and the bottom of the wire passing opening 19 is provided with a cutting line part 17. The wire passing opening can avoid cutting the wire in the initial compression stage, and when deformed to the middle stage, the cutting line part cooperates with the pressing surface to cut the wire, which can ensure that the wire is cut after compression. The second distance can be between 1 / 4 and 1 / 2 of the axial height of the closer nail 1.

[0062] In this embodiment, the acting member 2 is provided with a cutting edge part 25 and an opening 26 corresponding to the cutting line part 17 of the closer nail 1, the cutting edge part 25 is arranged at the bottom of the opening 26 facing the closer nail, and the position of the cutting edge part 25 corresponds to the cutting line part 17 of the closer nail. The cutting edge part 25 can be a protruding part with an acute angle blade part, which cooperates with the cutting line part of the closer nail to improve the cutting rate.

[0063] According to the embodiment of the present application, the cutting line part 17 includes a stepped slot 16 and a cutting line edge on the outer circumferential surface of the closer nail 1. The stepped slot 16 can be used for secondary compression, and the cutting line edge is located on the outside, which is more convenient for completely cutting the suture.

[0064] Referring to the schematic shown in Figure 12, the closer of the fourth embodiment of the present application can have various operation schemes in the implementation process, although only one of the operation methods is shown in Figure 12, and those skilled in the art can obviously understand that the two open wire ends can be placed on both sides or on the same side.

[0065] First step, pre-fixing the suture; the two open wire ends of the suture 9 to be knotted and fixed are passed through the wire passing channel 11 of the closer nail 1 from the one end 12 to the other end 13, and the two open wire ends are placed on the opposite sides of the closer nail 1, or they can also be placed on the same side.

[0066] Second step, pre-positioning the closer nail; aligning the other end 13 of the closer nail 1 with the acting member assembly section and assembling it into it to pre-position the closer nail 1 in the acting member 2;

[0067] Third step, preliminary pressing closed nail; push the role of the second part 2 along the first direction X movement, using the transmission slope to convert the movement of the role of the second part 2 to the radial extrusion force of the closed nail 1; as shown in the figure, during the pressing, the first pressing point X1 will be formed between the cutting blade part 25 and the tangent line part 17, and the cutting line action is performed during or after the pressing. In particular, in this embodiment, the first pressing point X1 is directly matched with the cutting blade part 25 of the outer wall surface 10 and the inner wall surface 20 to implement the cutting action and improve the cutting rate.

[0068] Fourth step, cutting the suture after the closed nail 1 is pressed by the role of the second part 2; the overline channel 11 of the closed nail is pressed after deformation, and the suture passing through the overline channel 11 is cut at the same time or after the closed nail pressing process is implemented by the outer wall surface 10 and the inner wall surface 20. Thus, the cutting of the suture can be implemented at the same time or after the suture is pressed, which can reduce a set of cutting line mechanism and supporting control transmission mechanism. Since the cutting action is performed during or after the closed nail 1 pressing, it can also ensure that the cutting of the suture is implemented at the same time or after the suture is pressed. Since the two actions are dependent on each other, the suture is pressed first and then cut, so that the knot failure is reduced;

[0069] Fifth step, push to the position and complete the knot. Fifth embodiment

[0070] Figure 13 is a combined cross-sectional structure diagram of the closed nail and the role of the fifth embodiment of the application, and figure 14 is a closed step diagram of the fifth embodiment of the application.

[0071] Referring to the figure, the fifth embodiment of the application provides a closer, and the main difference between the closer of the fifth embodiment and the first embodiment is that the cutting blade part 25 is arranged at the bottom of the role of the second part 2. The cutting blade part 25 is arranged at the end of the inner wall surface of the role of the second part 2 towards the closed nail 1, and the cutting blade part 25 is a ring blade structure with an acute angle cross section. Since the cutting blade part 25 is distributed in a whole circle, it cooperates with the tangent line part of the closed nail without the need for alignment, which reduces the difficulty of assembly and use.

[0072] Figure 15 is a combined cross-sectional structure diagram of the closed nail and the role of the sixth embodiment of the application, and figure 16 is a closed step diagram of the sixth embodiment of the application.

[0073] Referring to the schematic shown in the figure, the sixth embodiment of the present application provides a closer, the main difference between the closer of the sixth embodiment and the fourth embodiment is that the closure nail 1 is further provided with a plurality of wire passing openings 19, here the wire passing openings 19 are four equidistantly distributed, here the wire passing openings 19 are oblique outward cutouts of the other end 13 of the closure nail 1, and the bottom of the wire passing opening 19 is also configured with a cutting portion to cooperate with the cutting blade portion 25 of the acting element 2 to cut the wire. According to the schematic shown in Figure 16, the wire passing opening 19 in this embodiment moves the first pressing point X1 downward to delay the wire cutting action, while the inside of the acting element 2 will not delay the compression of the suture 9. Seventh embodiment

[0074] Figure 17 is a schematic view of the closure nail of a closer according to the seventh embodiment of the present application, and Figure 18 is a schematic view of the closing steps of a closer according to the seventh embodiment of the present application.

[0075] Referring to the schematic shown in the figure, the seventh embodiment of the present application provides a closer, the main difference between the closer of the seventh embodiment and the fourth embodiment is that the closure nail 1 is further provided with an inner wire cutting portion 1X, the inner wire cutting portion 1X is arranged at the inner wall of the other end 13 of the closure nail 1, and the inner wire cutting portion 1X is a convex rib with an acute cross section. Referring to the schematic shown in Figure 18, the inner wire cutting portion 1X can be aligned with each other to cut the suture 9 after the acting element 2 is extruded in place. According to the embodiment of the present application, the closure nail 1 is further provided with a wire passing opening 18, the wire passing opening 18 is opened in the outer wall of the closure nail 1, and the wire passing opening 18 is an opening extending in the first direction. The wire passing opening 18 can allow the suture to be directly translated from the outside through the wire passing opening 18 to the wire passing channel 11 of the closure nail 1, without the need for threading operation, which can reduce the assembly time. Eighth embodiment

[0076] Figure 19 is a schematic view of the cross-sectional structure of the closure nail of a closer according to the eighth embodiment of the present application, and Figure 20 is a schematic view of the closing steps of a closer according to the eighth embodiment of the present application.

[0077] Referring to the drawings, the eighth embodiment of the present application provides a closer, the main difference between the closer of the eighth embodiment and the first embodiment is that according to the foregoing embodiments, the closure nail 1 and the acting element 2 are provided with a first pressing point X1 and a second pressing point X2, so as to use the two pressing points to press the suture line therebetween, and in the foregoing embodiments, when there are two pressing points, only one pressing point can play the role of cutting the suture line, so if the pressing point does not achieve cutting, there is still a possibility of line failure. In view of this, one pressing matching part is added to one of the two pressing points in the present embodiment, so as to form a second effective cutting point, for example, in the eighth embodiment, the closure nail 1 is further provided with a root acting surface 101, the root acting surface 101 is arranged at one end 12 of the outer wall surface 10 of the closure nail 1, and the acting surface 101 is located between the flange edge 14 and the outer wall surface 10. According to the drawing 20, the acting surface 101 can be a bevel, which can extrude the first end 22 of the inner wall surface 20 that has moved to the position outward, and the acting surface 101 can increase the pressure of the second pressing point X2 after the acting element 2 is extruded to the position, thereby increasing a secondary cutting point, so as to ensure that the suture line is cut before the final action is completed, and the cutting rate is improved. Ninth embodiment

[0078] Fig. 21 is a cross-sectional structure diagram of a closure nail of a closer according to the ninth embodiment of the present application, and Fig. 22 is a closing step diagram of a closer according to the ninth embodiment of the present application.

[0079] Referring to the drawings, the ninth embodiment of the present application provides a closer, the main difference between the closer of the ninth embodiment and the eighth embodiment is that according to the foregoing embodiments, the closure nail 1 and the acting element 2 are provided with a first pressing point X1 and a second pressing point X2, so as to use the two pressing points to press the suture line therebetween, and in the foregoing embodiments, when there are two pressing points, only one pressing point can play the role of cutting the suture line, so if the pressing point does not achieve cutting, there is still a possibility of line failure. In view of this, one pressing matching part is added to one of the two pressing points in the present embodiment, so as to form a second effective cutting point, for example, in the ninth embodiment, the inner wall surface 20 of the acting element 2 is provided with a ring-shaped boss 201 at the second end 23, the ring-shaped boss 201 functions to increase the pressure of the first pressing point X1 after the acting element 2 is extruded to the position, so as to ensure that the suture line is cut before the final action is completed, and the cutting rate is improved. Tenth embodiment

[0080] Fig. 23 is a cross-sectional view of a closing staple of a closer according to the tenth embodiment of the present application, and Fig. 24 is a schematic view of a closing step of a closer according to the tenth embodiment of the present application.

[0081] Referring to the schematic views shown in the drawings, the tenth embodiment of the present application provides a closer. The main difference between the closer of the tenth embodiment and the closer of the ninth embodiment is that, as can be seen from the foregoing embodiments, a pressing cooperation part is arranged between the closing staple 1 and the acting member 2 at the first pressing point X1 and the second pressing point X2, so that the two pressing points are used to perform the thread cutting and pressing action. In the foregoing embodiments, when there are two pressing points, only one of them can perform the thread cutting action, and if the thread cutting action is not performed, the thread cutting failure can occur. Therefore, in the present embodiment, a pressing cooperation part is arranged at one of the two pressing points, so as to form a second effective thread cutting and pressing point. For example, in the tenth embodiment, the closing staple 1 is provided with a root ring protrusion 102, which is arranged at one end 12 of the outer wall surface 10 of the closing staple 1 and is located between the flange edge 14 and the outer wall surface 10. As shown in Fig. 24, after the acting member 2 is pressed into position, the root ring protrusion 102 can increase the pressure of the second pressing point X2, thereby increasing a second thread cutting point, so as to ensure that the thread cutting is completed before the final action is performed, thereby improving the thread cutting rate.

[0082] Fig. 25 is a cross-sectional view of a closing staple of a closer according to the eleventh embodiment of the present application, and Fig. 26 is a schematic view of a closing step of a closer according to the eleventh embodiment of the present application.

[0083] Referring to the schematic views shown in the drawings, the eleventh embodiment of the present application provides a closer, which can be considered as a combination of the eighth and ninth embodiments. Thus, a third thread cutting point is added, so as to ensure that the thread cutting is completed before the final action is performed, thereby improving the thread cutting rate.

[0084] Fig. 27 is a cross-sectional view of a closing staple of a closer according to the twelfth embodiment of the present application, and Fig. 28 is a schematic view of a closing step of a closer according to the twelfth embodiment of the present application.

[0085] Referring to the schematic views shown in the drawings, the twelfth embodiment of the present application provides a closer, which can be considered as a combination of the eighth and tenth embodiments. Thus, a third thread cutting point is added, so as to ensure that the thread cutting is completed before the final action is performed, thereby improving the thread cutting rate.

[0086] Figure 29 is a cross-sectional view of a closing staple of a closer according to a thirteenth embodiment of the present application, and Figure 30 is another cross-sectional view of a closing staple and an acting member of a closer according to the thirteenth embodiment of the present application.

[0087] According to the present embodiment, the first opening 2Y and the second opening 2Z are formed on the outer wall of the acting member 2 to facilitate the passing of the suture thread in and out of the acting member 2, so that a knot fixing portion is added between the pressing surface and the thread cutting surface of the closing staple 1, thereby increasing the fixing effect of the suture thread. As shown in Figure 29, after the suture thread is passed through the first opening 2Y and the second opening 2Z in sequence, the suture thread is sent towards the closing staple 1, and finally passed out between the closing staple 1 and the acting member 2, so that two-stage thread cutting pressing points are formed between the other end 13 and the one end 12 of the closing staple 1, and even a third-stage thread cutting pressing can be performed between the other end 13 of the closing staple 1 and the second end of the through hole 21. The first opening 2Y and the second opening 2Z can not only be used for fixing the suture thread, but also participate in the thread cutting action by using the fixing effect, so as to improve the thread cutting rate by multi-stage action.

[0088] As shown in Figure 30, after the suture thread is passed through the second opening 2Z and the first opening 2Y in sequence, the suture thread is sent towards the second end 23 of the acting member 2, so that multi-stage thread cutting pressing points are formed between the other end 13 of the closing staple 1 and the second end of the through hole 21 in sequence. The first opening 2Y and the second opening 2Z can not only be used for fixing the suture thread, but also participate in the thread cutting action by using the fixing effect, so as to improve the thread cutting rate by multi-stage action. The thread passing mode of Figure 30 can also reduce the suture thread between the closing staple 1 and the acting member 2, so as to avoid the situation that too many suture threads block the movement in the X direction.

[0089] In another aspect, the present application provides a knotting system, which comprises a controller 6, a sleeve 4, and a closer according to any one of the preceding embodiments, wherein the closer is arranged in the distal end of the sleeve 4, and the controller 6 is arranged in the proximal end of the sleeve 4. The front end of the transmission member 3 in the sleeve 4 has a reduced diameter portion 31, and the rear end of the reduced diameter portion 31 is a ring rib 32. Correspondingly, the inner cavity of the pressure contactor 5 has a positioning section, a tapered section, and an action section, wherein the inner diameter of the action section is greater than that of the positioning section. The reduced diameter portion 31 of the transmission member 3 has a sliding stroke in the positioning section, and the sliding stroke completes the pressing of the closing staple 1. After the ring rib 32 of the transmission member 3 pushes open the tapered section, the pressure contactor can be opened to release the positioning of the closing staple 1.

[0090] Other embodiments of the present description will be apparent to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. The description is intended to cover any alternatives, modifications, and equivalents of the described embodiments that are within the scope of the present description as defined by the appended claims. The specification and examples are intended to be exemplary only and not exhaustive, with the true scope and spirit of the present description being indicated by the following claims.

[0091] It is to be understood that the present description is not limited to the precise details of apparatus and methods described herein and as illustrated in the drawings. Various modifications and changes in or from the exact construction and arrangements of parts of the present description as described herein and as illustrated in the drawings can be made by those skilled in the art without departing from the scope of the present description. The scope of the present description is indicated by the appended claims rather than by the foregoing description.

[0092] The above description is intended to be illustrative and not restrictive. Many other modifications within the scope of the present description will become apparent to those skilled in the art upon reading the above description. The scope of the present description is not to be limited to the embodiments disclosed herein but is to be accorded the full scope permissible by the language of the claims.

Claims

1. A closer comprising: a closing nail (1) comprising one end (12) and an opposite other end (13), further having a wire passage (11) through the one end (12) and the other end (13), the closing nail (1) having an outer wall surface (10); an acting member (2) comprising a through hole (21) through two end surfaces of the acting member (2), the through hole (21) having an inner wall surface (20); and wherein the acting member can be actuated to move in a first direction so that the wire passage (11) of the closing nail (1) is compressed and a suture between the outer wall surface (10) and the inner wall surface (20) is cut off by the inner wall surface (20) of the acting member pressing the outer wall surface (10) of the closing nail (1).

2. The closer according to claim 1, wherein: the outer wall surface (10) and / or the inner wall surface (20) comprises a transmission slope, the slope of the transmission slope being between 5 degrees and 30 degrees; or the minimum diameter of the inner wall surface (20) is between 3 / 4 and 1 / 2 of the minimum diameter of the outer wall surface (10).

3. The closer according to claim 1 or 2, wherein: the inner wall surface (20) comprises a fitting section (24), the other end (13) of the closing nail (1) can be pre-fitted in the fitting section (24).

4. The closer according to any one of claims 1 to 3, wherein: the closing nail (1) is further provided with a deformation seam (15), the deformation seam (15) extends a first distance in the first direction from the other end (13), the width of the deformation seam (15) is less than the diameter of the suture to be used.

5. The closer according to any one of claims 1 to 4, wherein: the closing nail (1) is further provided with a wire passage opening (19), the wire passage opening (19) extends a second distance in the first direction from the other end (13), the width of the wire passage opening (19) is greater than or equal to the diameter of the suture to be used, the bottom of the wire passage opening (19) is provided with a cutting edge (17).

6. The closer according to claim 5, wherein: the cutting edge (17) comprises a stepped slot (16) and a cutting edge rib on the outer peripheral surface of the closing nail (1).

7. The closer according to claim 5, wherein: the acting member (2) is provided with a cutting edge (25) corresponding to the cutting edge (17) of the closing nail (1), the cutting edge (25) is provided at the opening bottom facing the closing nail, the position of the cutting edge (25) corresponds to the cutting edge (17) of the closing nail.

8. The closer according to claim 5, wherein: the bottom of the acting member (2) is provided with a cutting edge (25), the cutting edge (25) is provided at the inner wall surface of the acting member (2) facing the one end of the closing nail (1), and the cutting edge (25) is a ring blade structure with an acute angle cross section.

9. The closer according to any one of claims 1 to 8, wherein: ​ The closure nail (1) is further provided with a wire passing hole (18) which is opened on the outer wall of the closure nail (1) and extends in the first direction.

10. The closure device according to any one of claims 1 to 9, characterized in that, The closure nail (1) is further provided with an inner wire shearing part (1X) which is arranged on the inner wall surface of the other end (13) of the closure nail (1) and is a convex rib with an acute cross section.

11. The closure device according to any one of claims 1 to 10, characterized in that, Further comprising a transmission member (3) which is configured to push the acting member in the first direction, wherein the front end of the transmission member (3) has a reduced diameter part (31) and the rear end of the reduced diameter part (31) is a ring rib (32), and the inner cavity of the crimping device (5) has a positioning section, a tapered surface section and an action section, the inner diameter of the action section is larger than that of the positioning section, the reduced diameter part (31) of the transmission member (3) has a sliding stroke in the positioning section, and the sliding stroke is used to complete the compression of the closure nail (1), and after the ring rib (32) of the transmission member (3) opens the tapered surface section, the crimping device is opened to release the positioning of the closure nail (1).

12. The closure device according to any one of claims 1 to 11, characterized in that, The outer wall surface (10) of the closure nail (1) is provided with at least two acting surfaces in the first direction, and the acting surfaces are configured to be sequentially or selectively engaged with the inner wall surface (20) of the acting member (2) to form a pressing point for shearing the suture.

13. The closure device according to any one of claims 1 to 12, characterized in that, Further comprising a wire knot fixing part which is at least two wire passing holes arranged on the outer wall of the acting member (2).

14. A knotting system characterized by, The closure device according to any one of claims 1 to 13 is arranged in the distal end of a sleeve, and a controller is arranged in the proximal end of the sleeve.

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