Suturing device system

Abstract

A suturing device system, comprising a needle deployment apparatus (1000) and a suture control apparatus (2000). The needle deployment apparatus (1000) comprises a needle deployment handle (1010), a guide member (1020), pushing bodies (1040), and suture needles (1030). The needle deployment handle (1010) comprises a needle deployment top cover (1011) and a needle deployment bottom cover (1012) which are slidably connected. The guide member (1020) is located inside the needle deployment handle (1010), and the guide member (1020) is fixedly connected to the needle deployment top cover (1011). The pushing bodies (1040) are movably connected to the guide member (1020). At least two suture needles (1030) are configured. The suture needle (1030) is fixed to the pushing body (1040). The pushing bodies (1040) and the suture needles (1030) are arranged in a one-to-one correspondence. The needle deployment top cover (1011) is configured to slide relative to the needle deployment bottom cover (1012) so as to drive the guide member (1020) to move. The pushing body (1040) is configured to move along the guide member (1020) so as to drive the suture needle (1030) connected thereto to move. The needle deployment apparatus (1000) in the designed suturing device system can achieve both synchronized needle deployment and individual needle deployment, thereby effectively improving the use efficiency and use safety of the suturing device system, improving the puncture effect of the suture needles, and improving the success rate of surgery.

Description

A stitching system

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411204094.4, filed on August 30, 2024, entitled “A Stitching Device System”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of medical device technology, specifically to a suture system. Background Technology

[0004] Foramen ovale closure can be performed using interventional suturing, where a needle is inserted through the tissue surrounding the foramen ovale to suture it, and then sutured with a thread.

[0005] However, the suture devices currently in use cannot select the appropriate needle exit scheme according to different tunnel sizes when suturing the foramen ovale, resulting in unsatisfactory needle puncture effects and reduced surgical success rate. Summary of the Invention

[0006] This application provides a suture system that improves needle puncture effectiveness and increases surgical success rate.

[0007] An embodiment of this application provides a suture system, including: a needle delivery device and a suture control device; the needle delivery device is configured to push out or retract the needle, and the suture control device is configured to push out or retract the suture thread;

[0008] The needle dispensing device includes a needle dispensing handle, a guide, a pusher, and a sewing needle;

[0009] The needle dispensing handle includes a slidably connected needle dispensing top cover and needle dispensing bottom cover;

[0010] The guide is located inside the needle outlet handle, and the guide is fixedly connected to the needle outlet top cover;

[0011] The pushing body and the guide member are movably connected;

[0012] At least two suture needles are configured, and the suture needles are fixed to the pusher body. The pusher body and the suture needles are arranged in a one-to-one correspondence.

[0013] The needle outlet top cover is configured to slide relative to the needle outlet bottom cover to drive the guide member to move; the pusher is configured to move along the guide member to drive the connected suture needle to move.

[0014] According to the suture system in the above embodiments, during foramen ovale closure, the needle exit cap can slide relative to the needle exit bottom cap, synchronously driving the guide and multiple needles on the guide to move synchronously. When a needle is not in the correct position, it is not necessary to re-puncture the entire system; the needle can be adjusted by a pusher connected to that needle and then exited individually for puncture. That is, the needle exit device in the suture system of this application embodiment can achieve both synchronous and individual needle exit, effectively improving the efficiency and safety of the suture system, improving the puncture effect of the needles, and increasing the success rate of the surgery. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the exploded structure of the needle-dispensing device in an embodiment of this application;

[0016] Figure 2 is a schematic cross-sectional view of the needle-dispensing device in an embodiment of this application;

[0017] Figure 3 is a schematic diagram of the guide structure in an embodiment of this application;

[0018] Figure 4 is a schematic diagram of the first pusher assembly structure in an embodiment of this application;

[0019] Figure 5 is a schematic diagram of the assembly structure of the second pusher in an embodiment of this application;

[0020] Figure 6 is a schematic diagram of the guide assembly structure in an embodiment of this application;

[0021] Figure 7 is a schematic diagram of the pressing structure in an embodiment of this application;

[0022] Figure 8 is a partial structural diagram of the suture control device in an embodiment of this application;

[0023] Figure 9 is a schematic diagram of the push-wire assembly structure in an embodiment of this application;

[0024] Figure 10 is a schematic diagram of the exploded structure of the suture control device in an embodiment of this application;

[0025] Figure 11 is a schematic diagram of the spool seat structure in an embodiment of this application;

[0026] Figure 12 is a schematic diagram of the assembly structure of the spool seat in an embodiment of this application;

[0027] Figure 13 is a schematic diagram of the cross-sectional structure of the suture control device in Figure 10 in the GG direction;

[0028] Figure 14 is a schematic diagram of the loop knob structure in an embodiment of this application;

[0029] Figure 15 is a cross-sectional structural diagram of the suture gripping device in an embodiment of this application;

[0030] Figure 16 is a schematic diagram of the capture net structure in the retracted state in an embodiment of this application;

[0031] Figure 17 is a schematic diagram of the double-layer capture net structure in the unfolded state in an embodiment of this application;

[0032] Figure 18 is a schematic diagram of the application scenario of the suture gripping device in the embodiments of this application;

[0033] Figure 19 is a schematic diagram of the exploded structure of the bending device in an embodiment of this application;

[0034] Figure 20 is a cross-sectional structural diagram of the bending device in an embodiment of this application;

[0035] Figure 21 is a partial structural diagram of the bending device in an embodiment of this application;

[0036] Figure 22 is a schematic diagram of the front end seat and the front end assembly structure of the main tube in an embodiment of this application;

[0037] Figure 23 is a schematic diagram of the first turntable structure in an embodiment of this application;

[0038] Figure 24 is a schematic diagram of the front end seat structure in an embodiment of this application;

[0039] Figure 25 is a schematic diagram of the front end mounting structure in an embodiment of this application;

[0040] Figure 26 is a schematic diagram of the assembly structure of the first bending structure and the second bending structure in the embodiments of this application;

[0041] Figure 27 is a partial structural schematic diagram of the bending device in one embodiment of this application;

[0042] Figure 28 is a schematic diagram of the explosion structure of the first exhaust structure in an embodiment of this application;

[0043] Figure 29 is a schematic cross-sectional view of the first exhaust structure in an embodiment of this application;

[0044] Figure 30 is a schematic diagram of the application scenario of the exhaust device in the embodiments of this application;

[0045] Figure 31 is a schematic diagram of the second exhaust structure in an embodiment of this application;

[0046] Figure 32 is a schematic diagram of the main tube and sleeve tube structure in an embodiment of this application;

[0047] Figure 33 is a schematic diagram of the application scenario of the exhaust device in the embodiments of this application;

[0048] Figure 34 is a schematic diagram of the application scenario of the exhaust device in the embodiments of this application;

[0049] Figure 35 is a schematic diagram of the application scenario of the exhaust device in the embodiments of this application;

[0050] Figure 36 is a schematic diagram of the suture system structure in an embodiment of this application;

[0051] Figure 37 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0052] Figure 38 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0053] Figure 39 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0054] Figure 40 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0055] Figure 41 is a schematic diagram of the use scenario of the suture system in an embodiment of this application;

[0056] Figure 42 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0057] Figure 43 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0058] Figure 44 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0059] Figure 45 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0060] Figure 46 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0061] Figure 47 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0062] Figure 48 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0063] Figure 49 is a schematic diagram of the use scenario of the suture system in the embodiments of this application;

[0064] Figure 50 is a schematic diagram of the use scenario of the suture system in the embodiments of this application.

[0065] Explanation of reference numerals in the attached drawings: Needle dispensing device 1000: 1010. Needle dispensing handle, 1011. Needle dispensing top cover, 10111. Locking hole, 10112. Guide groove, 10113. Adjustment hole, 10114. Assembly hole, 10115. Divider plate, 10116. Divider position, 1012. Needle dispensing bottom cover, 10121. Glandular part, 1020. Guide component, 1021. First baffle, 1022. Second baffle, 1023. Third baffle, 1024. Conical block, 10241. Puncture groove, 1025. Splicing plate, 10251. Protruding plate, 1026. Needle insertion groove, 10261. First needle insertion groove, 10262. Second needle insertion groove, 1027. Locking groove, 1028. Main body channel, 1030. Sewing 1040. Needle; 1041. Pushing body; 1042. First pushing body; 1043. Second pushing body; 1044. Pushing main body; 10431. Head end; 10432. Tail end; 1044. Needle threading body; 1050. Locking element; 1051. Locking pin; 1052. Locking plate; 1053. Stop block; 1054. Locking cap; 1060. Locking strip; 1070. First push shaft; 1080. Second push shaft; 1090. Push rod; 1100. Push button; 1110. Pressing structure; 1111. Pressing plate; 1112. Elastic sleeve; 1113. Snap-fit ​​element; 1114. Toothed part; 1115. Connecting rod; 2000: 2010. Sewing thread; 2011. Abutment; 2020. Push Thread assembly, 2021. Push wire, 2022. First tube body, 2023. Second tube body, 2024. Limiting connector, 2030. Thread handle, 2031. Thread top cover, 20311. Thread return hole, 2032. Thread bottom cover, 2033. Adapter groove, 2040. Adapter, 2041. First mating hole, 2042. Second mating hole, 2043. Tapered hole, 2050. Guide tube, 2051. Trumpet tube, 2060. Thread reel seat, 2061. Thread reel hole, 2062. Push groove, 2063. First seat body, 2064. Second seat body, 2065. Push hole, 2066. Bearing hole, 2070. Thread spool, 2071. Marking position, 2080. Thread return assembly, 2081. Thread return knob Shaft, 20811. Retaining ring, 2082. Bearing, 2083. Return knob, 20831. Snap-fit ​​part, 20832. Protrusion, 2084. Nut, 2090. Sleeve, 2091. Limiting ring, 2100. Connecting tube, 2101. Snap-fit ​​ring, 2110. Protective cover; Thread gripping device 3000: 3010. Grabbing net, 3020. Connecting tube, 3021. Proximal end, 3022. Distal end, 3023. Developing ring, 3030. Reinforcing member, 3040. Support tube, 3050. State switching wire; Bending device 4000: 4010. Main tube, 4011. First chamber, 40111. First thread inlet hole, 4012. Second chamber, 4013. Third chamber, 40131.4014. Needle inlet hole; 4015. Second wire inlet hole; 4016. Needle outlet section; 4017. First flexible section; 4018. Second flexible section; 4019. Main body section; 4020. First bending adjustment structure; 4021. First turntable; 40211. First protrusion; 4022. First rotating shaft; 4023. First bending adjustment wire; 4024. First positioning bead; 4025. First wire receiving rod; 4026. First bending adjustment cap; 4030. Fixed. Fixed block, 4031. Installation channel, 4032. Assembly plate, 4040. Front end seat, 4041. Positioning rod, 4042. Thread hole, 4043. Shaft hole, 4050. Guide post, 4051. Guide hole, 4052. Development part, 4060. Adapter post, 4070. Second bending structure, 4071. Second rotating shaft, 4072. Second turntable, 4073. Second bending screw, 4074. Second thread connecting rod, 40 75. Second bending cap; 4080. Adapter; 4090. Bending handle; 4091. Bending top cover; 4092. Bending bottom cover; Exhaust device 5000: 5010. First exhaust structure; 5011. Exhaust pipe; 5012. First knob; 5013. Cap; 5014. First sealing ring; 5015. Sealing ring; 5016. Collection tube; 5011a. First channel; 5011b. Second channel; 5 011c. Injection tube; 5011d. Injection channel; 5020. Second venting structure; 5021. First tubular structure; 5022. Second knob; 5023. Second tubular structure; 5024. Valve; 5030. Inner tube; 5040. Reinforcing sheath core; 5050. Sheath tube; 5060. Guide wire; A. Foramen ovale; A1. Atrial septum; A2. Right atrium; A3. Left atrium; B. First viewing window; C. Second viewing window. Detailed Implementation

[0066] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0067] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0068] The serial numbers assigned to components in this document, such as "first" and "second," are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0069] As shown in Figures 1-14, an embodiment of this application provides a suture system, including a needle delivery device 1000 and a suture control device 2000. The needle delivery device 1000 is configured to push out or retract the needle 1030, and the suture control device 2000 is configured to push out or retract the suture 2010.

[0070] The needle delivery device 1000 includes a needle delivery handle 1010, a guide member 1020, a pusher 1040, and a sewing needle 1030. The needle delivery handle 1010 includes a slidably connected top cover 1011 and bottom cover 1012. The guide member 1020 is located within the needle delivery handle 1010, and is fixedly connected to the top cover 1011. The pusher 1040 and the guide member 1020 are movably connected.

[0071] At least two suture needles 1030 are configured, and each suture needle 1030 is fixed to a pusher body 1040. The pusher body 1040 and the suture needle 1030 are configured in a one-to-one correspondence. For example, there may be two, three, or four suture needles 1030. In this embodiment, four suture needles are used as an example to illustrate the structural design. The number of suture needles 1030 can be flexibly selected according to the situation, and this embodiment does not impose specific limitations.

[0072] The needle exit top cover 1011 is configured to slide relative to the needle exit bottom cover 1012 to move the guide 1020. The pusher 1040 is configured to move along the guide 1020 to move the connected sewing needle 1030.

[0073] Using the suture system described in the above embodiments of this application, during closure of the foramen ovale A, the needle exit top cover 1011 can slide relative to the needle exit bottom cover 1012, synchronously driving the guide member 1020 and the multiple suture needles 1030 on the guide member 1020 to move synchronously. When a suture needle 1030 is not in the correct position, the pusher 1040 connected to that suture needle can be used to adjust the position of the incorrectly positioned needle, without having to re-puncture the entire needle. That is, the needle exit device 1000 in the designed suture system can achieve both synchronous and individual needle exit, effectively improving the efficiency and safety of the suture system, improving the puncture effect of the suture needles 1030, and increasing the success rate of the surgery.

[0074] As shown in Figures 1-2, the needle dispensing device 1000 further includes a locking member 1050 and at least two locking bars 1060, the locking bars 1060 being fixed to the pusher body 1040. The locking member 1050 has a first state and a second state. In the first state, the locking member 1050 is configured to simultaneously lock at least two locking bars 1060. In the second state, the locking member 1050 is configured to release the locking of at least two locking bars 1060.

[0075] By cooperating with the locking member 1050 and the locking strip 1060, multiple needles 1030 on the guide member 1020 can move synchronously when the needle delivery device 1000 moves synchronously, preventing individual needle movement or shaking from interfering with the consistency of the simultaneous extension or retraction of multiple needles 1030. When it is necessary to move a single needle 1030, the locking member 1050 is in a second state to facilitate the individual movement of that needle 1030.

[0076] As shown in Figures 1 and 2, specifically, the locking element 1050 includes a locking pin 1051 and a locking plate 1052. A locking hole 10111 is provided on the needle outlet cover 1011. The locking plate 1052 is located inside the needle outlet handle 1010. Part of the locking pin 1051 passes through the locking hole 10111 and is threadedly connected to the locking plate 1052, while the remaining locking pins 1051 are located outside the needle outlet handle 1010. In a first state, the locking plate 1052 and at least two locking bars 1060 are in contact. In a second state, the locking plate 1052 and at least two locking bars 1060 are separated, and the locking pin 1051 is configured to change the position of the locking plate 1052 relative to the at least two locking bars 1060 by rotation.

[0077] As shown in Figures 1 and 2, the locking component 1050 also includes a stop block 1053 and a locking cap 1054. Guide grooves 10112 are respectively formed on the two inner side walls of the needle outlet cap 1011. Both ends of the locking plate 1052 are slidably connected to the guide grooves 10112. When the locking pin 1051 is rotated, the locking plate 1052 slides relative to the guide grooves 10112 to change the position of the locking plate 1052 relative to the locking strip 1060. The locking cap 1054 is fixedly connected to the locking pin 1051 outside the needle outlet handle 1010. A stop block 1053 is fixed at the end of the guide groove 10112 away from the locking cap 1054. The stop block 1053 restricts the movement range of the locking plate 1052, preventing the locking plate 1052 from disengaging from the guide groove 10112, and thus preventing the locking plate 1052 from disengaging from the locking pin 1051.

[0078] As shown in Figure 3, the guide 1020 includes a first baffle 1021, a second baffle 1022, a third baffle 1023, and a conical block 1024. The conical block 1024 is fixed to the side of the first baffle 1021 away from the second baffle 1022. The pusher 1040 includes a first pusher 1041 and a second pusher 1042. Two of each of the first pusher 1041 and the second pusher 1042 are configured. A suture needle 1030 is fixed to the same side of the first pusher 1041 and the second pusher 1042 near the conical block 1024. Four puncture grooves 10241 are formed on the outer wall of the conical block 1024, and the four puncture grooves 10241 are arranged in an array around the axis of the conical block 1024. One end of the suture needle 1030, away from the third baffle 1023, passes through the puncture groove 10241. The conical block 1024 is configured to guide the suture needle 1030 into the main body tube 4010. A locking strip 1060 is fixed to both the first pusher 1041 and the second pusher 1042. A first push shaft 1070 is fixed between the first baffle 1021 and the second baffle 1022. The first pusher 1041 is movably sleeved on the first push shaft 1070, and at least one first push shaft 1070 is sleeved on each first pusher 1041. A second push shaft 1080 is fixed between the second baffle 1022 and the third baffle 1023. The second pusher 1042 is movably sleeved on the second push shaft 1080, and at least one second push shaft 1080 is sleeved on each second pusher 1042. Multiple adjustment holes 10113 are provided on the needle outlet cover 1011. Push rods 1090 are fixed on the side of the first push body 1041 and the second push body 1042 facing the needle outlet cover 1011. Some of the push rods 1090 pass through the adjustment holes 10113 and are placed outside the needle outlet handle 1010. A push button 1100 is sleeved on the push rod 1090 located outside the needle outlet handle 1010. The push button 1100 facilitates the application of force to push the push rod 1090.

[0079] As shown in Figures 4 and 5, each first pusher 1041 includes a pusher body 1043 and a needle-threading body 1044 connected together. Each pusher body 1043 has a head end 10431 and a tail end 10432. The head end 10431 is located near the needle outlet top cover 1011, and the tail end 10432 is located near the needle outlet bottom cover 1012. Two first push shafts 1070 are movably sleeved on the pusher body 1043 of the first pusher 1041, and two second push shafts 1080 are movably sleeved on the pusher body 1043 of the second pusher 1042. The sewing needles 1030 on both the first pusher 1041 and the second pusher 1042 are fixed to the needle-threading body 1044.

[0080] In the first pushing body 1041, the needle-threading body 1044 is fixed to the side wall of the pushing body 1043. The surfaces of the pushing body 1043 and the needle-threading body 1044 near the needle outlet cover 1011 are flush. The needle-threading body 1044 is fixed to the side of the pushing bodies 1043 of the two first pushing bodies 1041 that are close to each other. In the second pushing body 1042, the needle-threading body 1044 is fixed to the side wall of the pushing body 1043. The surfaces of the pushing body 1043 and the needle-threading body 1044 near the needle outlet cover 1012 of the two second pushing bodies 1042 that are close to each other are fixed to the needle-threading body 1044. The locking strip 1060 on the first pushing body 1041 is fixed to the side of the needle-threading body 1044 facing the needle outlet cover 1011. The locking strip 1060 on the second pusher 1042 is fixed to the side of the pusher body 1043 facing the needle outlet cover 1011.

[0081] As shown in Figure 3, the guide 1020 also includes a splicing plate 1025, which is connected to and perpendicular to the first baffle 1021, the second baffle 1022, and the third baffle 1023. The first baffle 1021 has a protruding plate 10251 on the side facing the needle outlet cover 1011, and the protruding plate 10251 is fixedly connected to the needle outlet cover 1011.

[0082] As shown in Figure 6, a first pusher 1041 and a second pusher 1042 are installed on the guide member 1020. A sewing needle 1030 and a locking strip 1060 are respectively installed on the first pusher 1041 and the second pusher 1042. One end of each of the four locking strips 1060 is fixed to the corresponding pusher 1040, and the other end of each of the four locking strips 1060 extends away from the conical block 1024. The four locking strips 1060 are arranged side by side so that they can be locked by a locking plate 1052. The two first pushers 1041 and the two second pushers 1042 are symmetrically distributed about the axis of the conical block 1024. Combining the shape design of the first pushers 1041 and the second pushers 1042 and the distribution of the suture needles 1030 on them, the axes of the four suture needles 1030 can form a standard rectangle. The axes of the four suture needles 1030 and the axes of the four puncture grooves 10241 on the conical block 1024 also correspond one-to-one, so that the four suture needles 1030 can be accurately inserted into the corresponding puncture grooves 10241.

[0083] As shown in Figure 3, the guide member 1020 has needle-threading grooves 1026 corresponding to the number of needles 1030. Specifically, the needle-threading grooves 1026 are divided into first needle-threading grooves 10261 and second needle-threading grooves 10262. Two first needle-threading grooves 10261 are arranged side-by-side on the guide member 1020 facing the needle outlet cover 1011, and are configured to allow the needles 1030 on the first pusher body 1041 to pass through. Two second needle-threading grooves 10262 are arranged side-by-side on the guide member 1020 facing the needle outlet cover 1012, and are configured to allow the needles 1030 on the second pusher body 1042 to pass through. The first needle-threading grooves 10261 and second needle-threading grooves 10262 penetrate the first baffle 1021, the second baffle 1022, and the third baffle 1023. The guide member 1020 has two locking grooves 1027 on the side facing the needle outlet cover 1011. The locking grooves 1027 are configured to allow the locking strip 1060 to pass through, and the two locking grooves 1027 are symmetrically distributed about the axis of the conical block 1024. The locking grooves 1027 pass through the second baffle 1022 and the third baffle 1023. The guide member 1020 also has a main body channel 1028, which is configured to allow the main body tube 4010 to pass through. The main body channel 1028 passes through the first baffle 1021, the second baffle 1022, the third baffle 1023, and the conical block 1024.

[0084] As shown in Figure 7, pressing structures 1110 are symmetrically arranged on both side walls of the needle outlet cover 1011. Each pressing structure 1110 includes a pressing plate 1111, an elastic sleeve 1112, and a snap-fit ​​component 1113. The pressing plate 1111 has a toothed portion 1114 and a connecting rod 1115 on each side. The toothed portion 1114 is located away from the needle outlet cover 1011, and the connecting rod 1115 is located near the needle outlet cover 1011. Multiple connecting rods 1115 are configured, for example, four. One end of the connecting rod 1115, away from the pressing plate 1111, passes through the side wall of the needle outlet cover 1011 and is placed inside the needle outlet cover 1011. The side wall of the needle outlet cover 1011 has mounting holes 10114 corresponding to the connecting rod 1115, allowing the connecting rod 1115 to pass through the side wall of the needle outlet cover 1011. The elastic sleeve 1112 is disposed on the connecting rod 1115 between the pressing plate 1111 and the needle top cover 1011, and the snap fastener 1113 is fixed to the end of the connecting rod 1115 away from the pressing plate 1111. The elastic sleeve 1112, the snap fastener 1113 and the connecting rod 1115 are all disposed in a corresponding manner.

[0085] The needle outlet cover 1012 has symmetrically arranged female teeth 10121 on both side walls, and male teeth 1114 are configured to engage with the female teeth 10121, with the number of teeth in the male teeth 1114 being less than the number of teeth in the female teeth 10121. The elastic sleeve 1112 is, for example, a conical spring, and the locking member 1113 is, for example, a pin or a retaining ring. By pressing the structure 1110 and the second teeth, it is easy to quickly lock or unlock the needle outlet cover 1011 and the needle outlet cover 1012, saving instrument usage time.

[0086] As shown in Figure 8, the suture control device 2000 includes a suture 2010 and a suture pusher assembly 2020. The end of the suture 2010 is configured to pass through a needle 1030, and the suture 2010 within the needle 1030 has an abutment 2011. The suture pusher assembly 2020 includes a pusher wire 2021, one end of which abuts against the abutment 2011, and the other end of which is located outside the needle handle 1010. The pusher wire 2021 is configured to push the suture 2010. The abutment 2011 can be formed, for example, by knotting the suture 2010, or it can be a loop with a developing function. When suture pusher is needed, the abutment 2011 and the pusher wire 2021 on the suture 2010 work together to quickly achieve the suture pusher function.

[0087] It should be noted that, in this embodiment of the application, the needle 1030 can accommodate a suture 2010 and a pusher wire 2021, but cannot accommodate a pusher wire 2021 and an abutment 2011. That is, the pusher wire 2021 and the abutment 2011 cannot be placed side by side in the needle 1030. The pusher wire 2021 and the abutment 2011 need to be staggered in the needle 1030. This also helps to ensure the abutment of the pusher wire 2021 and the abutment 2011.

[0088] As shown in Figures 8 and 9, the push wire assembly 2020 also includes a first tube 2022, a second tube 2023, and a limiting connector 2024. The first tube 2022 is fixedly sleeved on the push wire 2021, and the second tube 2023 is movably sleeved on the push wire 2021. One end of the push wire 2021 is the push wire end, and the other end of the push wire 2021 is the free end. The first tube 2022 is located on the side closer to the push wire end, and the second tube 2023 is located on the side closer to the free end. The limiting connector 2024 is fixedly connected to the free end.

[0089] The first tube 2022 connects to the push wire 2021, allowing external force to propel the push wire 2021 forward when the first tube 2022 is pushed. The second tube 2023 strengthens the pushing force (because the push wire 2021 is relatively soft and not easily pushed directly). The structures of the first tube 2022 and the second tube 2023 can be identical. The radial dimension of the limiting connector 2024 is larger than that of the second tube 2023 to prevent the second tube 2023 from separating from the push wire 2021. The designed push assembly 2020 ensures the stability of the push process and improves the push speed (compared to directly pushing the suture 2010 or pushing the push wire 2021 to drive the suture 2010 forward). The first tube 2022 and the second tube 2023 are made of metal, such as stainless steel, and the push wire 2021 is made of nickel-titanium wire.

[0090] As shown in Figures 8, 10, and 12, the suture control device 2000 also includes a suture handle 2030, an adapter 2040, and a guide tube 2050. The suture handle 2030 has an adapter groove 2033 on its outer side. The adapter 2040 has a first docking hole 2041 and a second docking hole 2042 connected along the axial direction. The suture needle 1030 and the guide tube 2050 are distributed at both ends of the adapter 2040. Part of the suture needle 1030 is fixedly sleeved in the first docking hole 2041, and part of the guide tube 2050 is fixedly sleeved in the second docking hole 2042. The outer diameter of the needle 1030 is smaller than the outer diameter of the guide tube 2050. To facilitate the entry of the suture 2010 into the needle 1030 from the guide tube 2050 for thread pushing, a tapered hole 2043 is provided in the adapter 2040 between the first docking hole 2041 and the second docking hole 2042. The diameter of the tapered hole 2043 gradually decreases from the side closer to the second docking hole 2042 to the side farther away from the second docking hole 2042. A flared tube 2051 can also be designed at the end of the guide tube 2050 away from the adapter 2040 to facilitate the entry of the suture 2010 into the guide tube 2050.

[0091] As shown in Figures 4 and 5, the adapter 2040, which fixes the needle 1030 and the guide tube 2050, is fixed in a corresponding hole or channel on the needle body 1044. The adapter 2040 facilitates the assembly of the needle 1030 and the guide tube 2050. As shown in Figure 1, the adapter 2040 and part of the guide tube 2050 are placed inside the needle extension handle 1010. The needle extension handle 1010 is connected to the thread handle 2030, which is located on the side away from the conical block 1024.

[0092] A portion of the first tube 2022 near the pusher end is movably placed inside the guide tube 2050 to facilitate rapid thread pushing. The second tube 2023 and the limiting connector 2024 are located outside the suture handle 2030. The second tube 2023 is detachably fixed inside the adapter groove 2033. The adapter groove 2033 can temporarily store the second tube 2023 and also serves to prevent the second tube 2023 from being lost. At the same time, by movably sleeved the second tube 2023 on the pusher wire 2021, the axial dimension of the suture control device 2000 is not too long, which is conducive to the miniaturization of instrument design.

[0093] The suture 2010, the pusher assembly 2020, the adapter 2040, the guide tube 2050, and the needle 1030 are all set up in a corresponding manner. When the suture 2010 needs to be pushed out of the needle 1030, the second tube 2023 is inserted into the suture handle 2030 and abuts against the first tube 2022, and the pusher end abuts against the abutment 2011.

[0094] As shown in Figures 10-13, the thread handle 2030 includes a top thread cover 2031 and a bottom thread cover 2032, and the needle exit bottom cover 1012 and the bottom thread cover 2032 can be an integral structure. As shown in Figure 36, the thread handle 2030 is located to the right of the needle exit handle 1010. The thread control device 2000 also includes a thread spool 2060, a thread spool 2070, and a return thread shaft 2081 located within the thread handle 2030.

[0095] The thread wheel seat 2060 is located at the end of the guide tube 2050 away from the adapter 2040. Multiple thread wheel holes 2061 are formed on the side of the thread wheel seat 2060 facing the suture cap 2031. Multiple thread push grooves 2062 are formed on the thread wheel seat 2060, with each thread push groove corresponding to one of the thread wheel holes 2061. One end of the thread push groove 2062 is tangential to and communicates with the thread wheel hole 2061, and the other end extends to the end face of the thread wheel seat 2060 near the adapter 2040. A thread spool 2070 is rotatably fixed inside the thread wheel hole 2061. Multiple turns of suture 2010 are wound on the thread spool 2070. The end of the suture 2010 passes through the thread push groove 2062 and the guide tube 2050 and enters the needle 1030.

[0096] The thread return shaft 2081 and the thread spool 2070 are fixedly connected. The thread return shaft 2081 is configured to rotate the thread spool 2070 for thread return operation. A corresponding thread return hole 20311 is provided on the top cover 2031 so that the thread return shaft 2081 can pass through and extend to the outside of the thread handle 2030. The top cover 2031 is made of transparent material. The thread spool 2070 has a marking position 2071 on the side facing the top cover 2031. In this way, if an abnormality occurs when pushing or grabbing the thread 2010, the marking position 2071 of the thread spool 2070 will not rotate through the top cover, allowing for timely adjustment of the operation. The abnormal thread 2010 can be returned by the thread return shaft 2081. After returning the thread, it can be pushed again by the thread push assembly 2020. The thread spool 2070, return thread shaft 2081, thread wheel hole 2061, sewing thread 2010, thread pusher assembly 2020, adapter 2040, guide tube 2050, and sewing needle 1030 are all set up one by one.

[0097] Multiple guide tubes 2050 are configured, spatially spaced. For example, if four needles 1030 are configured, four guide tubes 2050 are also configured accordingly. As shown in Figure 1, a partition plate 10115 is provided at the end of the needle exit cap 1011 away from the conical block 1024, that is, the end near the suture handle 2030. Four partition positions 10116 are provided on the partition plate 10115, which are configured to allow the guide tubes 2050 to pass through. The four partition positions 10116 are arranged in pairs. One set of partition positions 10116 is arranged side by side and located on the upper side, while the other set of partition positions 10116 is also arranged side by side but located on the lower side. The lower set of partition positions 10116 is distributed on both sides of the upper set of partition positions 10116. As shown in Figure 11, the thread wheel seat 2060 includes a first seat 2063 and a second seat 2064. The first seat 2063 is located on the side closer to the needle 1030, and the second seat 2064 is located on the side away from the needle 1030. The end face of the first seat 2063 facing the suture top cover 2031 is recessed downward relative to the end face of the second seat 2064 facing the suture top cover 2031, thus forming a stepped thread wheel seat 2060. Four thread pushing holes 2065 are provided at the end of the thread wheel seat 2060 away from the needle 1030. The four thread pushing holes 2065 are divided into two groups. One group of thread pushing holes 2065 is arranged side by side and located on a relatively upper side, and the other group of thread pushing holes 2065 is arranged side by side and located on a relatively lower side. The lower group of thread pushing holes 2065 is distributed on both sides of the upper group of thread pushing holes 2065. The thread pushing holes 2065 and the thread pushing grooves 2062 correspond one-to-one and are connected. The suture handle 2030 has operating holes (not shown) that correspond one-to-one with the positions of the push-thread holes 2065. When it is necessary to push the thread, the second tube 2023 is passed through the operating holes, the push-thread holes 2065, the push-thread groove 2062, and the first tube 2022 to abut against each other. Through the structural layout of the thread wheel seat 2060 and the distributed arrangement of the guide tubes 2050 by the partition plate 10115, there is sufficient operating space when pushing the four sutures 2010, preventing the four sutures 2010 from gathering and making it difficult to push the thread.

[0098] The thread control device 2000 also includes a thread return assembly 2080, which includes a thread return shaft 2081, a bearing 2082, a thread return knob 2083, and a nut 2084. Corresponding bearing holes 2066 are formed on the first seat 2063 and the second seat 2064. The bearing holes 2066 and the thread wheel holes 2061 correspond one-to-one and are connected. The bearing holes 2066 are located on the side of the thread wheel holes 2061 away from the thread top cover 2031. A retaining ring 20811 is provided on the side wall of the thread return shaft 2081. A thread spool 2070 is located between the retaining ring 20811 and the bearing 2082, and both ends of the thread spool 2070 abut against the retaining ring 20811 and the bearing 2082, respectively. One end of the return shaft 2081 passes through the spool 2070 and is threadedly connected to the bearing 2082 and nut 2084. The other end of the return shaft 2081 is sleeved with the return knob 2083. The return knob 2083 drives the return shaft 2081 to rotate, which in turn drives the spool 2070 and bearing 2082 to rotate synchronously. The two ends of the inner ring of the bearing 2082 abut against the spool 2070 and the nut 2084 respectively. Therefore, when the bearing 2082 rotates, it is the inner ring bearing 2082 that rotates, which makes the spool 2070 rotate with less resistance.

[0099] As shown in Figures 10 and 13-14, each return hole 20311 is provided with a sleeve 2090. The opening of the sleeve 2090 is connected to the return hole 20311. One end of the connecting tube 2100 is fixed to the bottom of the sleeve 2090. The other end of the connecting tube 2100 passes through the return hole 20311 and is placed outside the sewing handle 2030. The outer wall of the connecting pipe 2100 is provided with a snap ring 2101, and the inner wall of the return knob 2083 is provided with multiple snap parts 20831, for example, three snap parts 20831 are provided at intervals along the axis of the return knob 2083. The middle snap part 20831 is configured to snap into the snap ring 2101, so that the return knob 2083 and the connecting pipe 2100 can be rotatably sleeved. The snap parts 20831 on both sides can support the return knob 2083 and prevent the return knob 2083 from shaking relative to the connecting pipe 2100. The return shaft 2081 passes through the connecting pipe 2100 and sleeves with the return knob 2083. The return shaft 2081 and the return knob 2083 are provided with a concave-convex fit structure so that the return knob 2083 and the return shaft 2081 can rotate synchronously.

[0100] As shown in Figure 13, which is a cross-sectional view of the suture control device in Figure 10 along the GG direction, the return knob 2083 is clearly shown in Figure 13, while the protective cover 2110 in Figure 10 is omitted. A limiting ring 2091 is provided on the inner wall of the sleeve 2090 near the return hole 20311. A protrusion 20832 is provided on the outer wall of the return knob 2083, and the protrusion 20832 is located inside the sleeve 2090. When it is necessary to rotate the return shaft 2081, as shown in the return knob 2083 on the left side of Figure 13, the snap-fit ​​part 20831 and the snap-fit ​​ring 2101 are snapped together, and the ends of the return knob 2083 and the return shaft 2081 are in a concave-convex fit, while the protrusion 20832 and the snap-fit ​​ring 2101 are separated. When the return shaft 2081 is not needed to be rotated, the return knob 2083 is lifted upwards, as shown by the return knob 2083 on the right side of Figure 13. The latching part 20831 and the latching ring 2101 are in a non-connected state, and the end of the return knob 2083 and the return shaft 2081 are also released from the concave-convex fit relationship. However, at this time, the protrusion 20832 and the limiting ring 2091 abut against each other, and the limiting ring 2091 restricts part of the return knob 2083 within the sleeve 2090, so that the return knob 2083 can move axially within a certain range.

[0101] As shown in Figure 10, the suture control device 2000 also includes a protective cover 2110. The protective cover 2110 is detachably fixed above the suture top cover 2031. The protective cover 2110 can cover multiple return knobs 2083 and multiple operating holes on the suture handle 2030, preventing the first tube 2022 inside the suture handle 2030 from running out. The top of the protective cover 2110 and the return knob 2083 can be provided with a concave-convex matching structure to prevent the return knob 2083 from being accidentally rotated when not in use.

[0102] As shown in Figures 15-18, the suture system also includes a suture gripping device 3000, which includes a gripping net 3010, a connecting tube 3020, a reinforcing member 3030, a support tube 3040, and a state switching wire 3050.

[0103] The capture net 3010 has a retracted state and an extended state. In the retracted state, it is strip-shaped; in the extended state, it is columnar. The strip-shaped capture net 3010 facilitates storage and movement within the inner tube 5030. The columnar capture net 3010, such as a cylindrical one, has a certain thickness, which prevents the suture needle 1030 from passing through the capture net and damaging other tissues around the foramen ovale A, while also enhancing the capture function of the suture 2010, preventing the suture 2010 from being missed. As shown in Figure 17, the capture net 3010 can also be a double-layered net, with the lower layer configured for the suture needle 1030 to pass through, and the upper layer preventing the suture needle 1030 from piercing other human tissues.

[0104] The connecting tube 3020 has a proximal end 3021 and a distal end 3022. The distal end 3022 is connected to one end of the capture net 3010. The proximal end 3021 can be located outside the sewing handle 2030 so as to apply force to push the connecting tube 3020 and the capture net 3010 forward in the inner tube 5030.

[0105] The reinforcing member 3030 is connected to the other end of the capture net 3010. The reinforcing member 3030 is similar to a mortise or a loop. The connection between the reinforcing member 3030 and one end of the capture net 3010 can have a gathering effect on the capture wires or capture lines at the end of the capture net 3010, which helps to maintain the shape of the capture net 3010 and prevents the capture net 3010 from spreading out.

[0106] The support tube 3040 and the connecting tube 3020 are connected. One end of the support tube 3040 is connected to the distal end 3022, and the other end of the support tube 3040 is a free end. The support tube 3040 is located inside the capture net 3010. The free end of the support tube 3040 is configured to abut or be sleeved with the reinforcing member 3030 on the capture net 3010 in the unfolded state.

[0107] One end of the state switching wire 3050 passes through the connecting pipe 3020 and the support pipe 3040 into the capture net 3010 and is connected to the reinforcing member 3030. The other end of the state switching wire 3050 is located outside the connecting pipe 3020. The state switching wire 3050 is configured to move along the axial direction of the connecting pipe 3020 to switch the state of the capture net 3010.

[0108] The suture grasping device 3000 designed in the embodiments of this application uses a strip-shaped grasping net 3010 and a connecting tube 3020 to facilitate the movement and transport of the grasping net 3010 within the inner tube 5030, so that the entire grasping net 3010 is placed outside the inner tube 5030. It should be noted that when using the suture system, the end of the inner tube 5030 enters the human body and passes through the foramen ovale A to reach the left atrium A3. Correspondingly, when the grasping net 3010 passes through the inner tube 5030 and is placed outside the inner tube 5030, that is, the grasping net 3010 is placed at the left atrium A3 outside the inner tube 5030. When the grasping net 3010 is placed outside the inner tube 5030, the tension switching wire 3050 is activated, that is, the reinforcing member 3030 is pulled closer to the connecting tube 3020, so that the state of the grasping net 3010 changes from strip-shaped to column-shaped, in order to facilitate subsequent needle threading and suture pushing 2010. After the suture 2010 is pushed out, the state switching wire 3050 moves in the opposite direction, changing the state of the capture net 3010 from columnar to strip-shaped. Then, the capture net 3010 is withdrawn from the inner tube 5030 through the connecting tube 3020, thus capturing the suture 2010. The support tube 3040, when the capture net 3010 is in the unfolded state, engages or abuts with the reinforcing member 3030, providing support for the columnar capture net 3010. This ensures sufficient thickness space for the capture net 3010, thereby preventing the suture needle 1030 from piercing unrelated human tissues and allowing the capture net 3010 to better perform its function of capturing the suture 2010.

[0109] As shown in Figures 19-27, the suture system also includes a bending adjustment device 4000, which includes a main tube 4010 and a first bending adjustment structure 4020. The main tube 4010 has a front end and a rear end, and a first chamber 4011 is provided inside the main tube 4010. A first infeed hole 40111 communicating with the first chamber 4011 is opened on the side wall of the main tube 4010 between the front end and the rear end. The first bending adjustment structure 4020 includes a first turntable 4021, a first rotating shaft 4022, and a first bending wire 4023. One end of the first bending wire 4023 is fixed to the front end of the main tube 4010, and the other end of the first bending wire 4023 passes through the first chamber 4011 and the first infeed hole 40111 and is fixed to the first turntable 4021. The first turntable 4021 and the first rotating shaft 4022 are fixedly connected. The first turntable 4021 is configured to rotate synchronously with the first rotating shaft 4022 to tighten or loosen the first adjusting wire 4023. By rotating the first rotating shaft 4022, the first turntable 4021 and the first adjusting wire 4023 can be driven to move synchronously to adjust the bending of the section of the main tube 4010 near the front end, ensuring the puncture accuracy of the suture needle 1030 and improving the success rate of the operation.

[0110] As shown in Figures 19-21 and 23, the bending device 4000 further includes a fixing block 4030 and first positioning beads 4024. A first rotating shaft 4022 and the fixing block 4030 are rotatably connected. Two first turntables 4021 are configured, located at opposite ends of the fixing block 4030. Multiple first protrusions 40211 are provided on the end face of the first turntable 4021 facing the fixing block 4030. These protrusions are arranged in an array around the axis of the first turntable 4021, forming a first engaging space between adjacent protrusions 40211. Multiple first positioning beads 4024 are fixed to the side of the fixing block 4030 facing the first turntable 4021. The beads of the first positioning beads 4024 engage within the first engaging spaces, allowing them to be positioned in different first engaging spaces when the first rotating shaft 4022 rotates. The first turntable 4021, the first bending wire 4023, and the first wire inlet hole 40111 are all arranged in a corresponding manner. The ends of the two first bending wires 4023 away from the front end of the main body tube 4010 are distributed on both sides of the axis of the main body tube 4010, so that when the first rotating shaft 4022 rotates, either of the two first bending wires 4023 is in a tightened state, and the other of the two first bending wires 4023 is in a relaxed state.

[0111] Two first turntables 4021 are set up and respectively located at both ends of the fixed block 4030. Combined with the position layout of the two first bending screws 4023, the designed bending device 4000 has forward and reverse bending functions. For example, as shown in Figure 21, operating the first rotating shaft 4022 can bend the main tube 4010 at the front end upward, or rotating the first rotating shaft 4022 in the opposite direction can bend the main tube 4010 at the front end downward, so that the bending device 4000 has more application scenarios or a wider range of applications. The first protrusion 40211 has a curved surface to allow the first positioning bead 4024 to be tangent to and pass over the first protrusion 40211. Each first turntable 4021 and fixing block 4030 is provided with a cooperating first protrusion 40211 and first positioning bead 4024. This allows the first positioning bead 4024 to switch between different first engagement spaces when the first rotating shaft 4022 rotates, and to engage in the current first engagement space when the first rotating shaft 4022 stops rotating, thus providing a stop-and-go function. The cooperation between the first protrusion 40211 and the first positioning bead 4024 enables a self-locking function. In the designed bending device 4000, when the first bending wire 4023 is subjected to a large tensile force, the cooperation between the first protrusion 40211 and the first positioning bead 4024 firmly ensures the current state of the bending device 4000, preventing instability or wobbling of the first bending wire 4023.

[0112] As shown in Figures 19-21, a groove is formed on the side wall of the first turntable 4021 to facilitate the winding of the first bending wire 4023. A first wire-receiving rod 4025 is provided in the groove of the first turntable 4021. The end of the first bending wire 4023 away from the front end of the main tube 4010 is fixed to the first wire-receiving rod 4025. The first wire-receiving rod 4025 ensures that the first bending wire 4023 moves synchronously when the first turntable 4021 rotates. The bending device 4000 also includes a bending handle 4090, which includes a bending top cover 4091 and a bending bottom cover 4092 connected to each other. As shown in Figure 36, the bending handle 4090 is located to the left of the needle outlet handle 1010. The bending bottom cover 4092 and the needle outlet bottom cover 1012 can be an integral structure. The first bending structure 4020 also includes a first bending cap 4026. The first bending structure 4020 and the fixing block 4030 are assembled inside the bending handle 4090. The first rotating shaft 4022 passes through the bending top cover 4091 and is fixedly connected to the first bending cap 4026. An installation channel 4031 is provided on the fixing block 4030. The shape of the installation channel 4031 is adapted to the outer side wall of the main tube 4010. The installation channel 4031 is configured to fix part of the main tube 4010.

[0113] As shown in Figures 21-22 and 24-27, the bending device 4000 also includes a front end seat 4040, which is connected to the front end of the main tube 4010. The front end seat 4040 has a threading hole 4042. The first bending wire 4023 passes through the threading hole 4042 to become a double-strand bending wire. One end of the double-strand bending wire is fixed to the threading hole 4042, and the other end passes through the first chamber 4011 and is fixed to the first turntable 4021. Alternatively, the front end seat 4040 may not have a threading hole 4042, but the bending device 4000 still includes a transition post 4060. One end of the transition post 4060 is fixed to the end of the front end seat 4040 near the main tube 4010. The transition post 4060 is fixedly connected to the first bending wire 4023 and is sleeved and fixed inside the first chamber 4011. The front-end connector 4040 and the adapter connector 4080 are made of metal to ensure the strength of the fixation. For example, the front-end connector 4040 and the adapter connector 4080 are both made of stainless steel.

[0114] Multiple circumferentially spaced positioning rods 4041 are provided at the end of the front end seat 4040 away from the main body tube 4010. The positioning rods 4041 are elastic. The number of positioning rods 4041 is, for example, three or four. The positioning rods 4041 have two states: a retracted state and a dispersed state. When the front end seat 4040 is placed inside the sheath tube 5050 along with the main body tube 4010, the multiple positioning rods 4041 are in the retracted state. When the front end seat 4040 passes through the sheath tube 5050 and is placed in the right atrium A2 inside the human body, the multiple positioning rods 4041 are in the dispersed state due to their own elasticity. The multiple positioning rods 4041 in their dispersed state allow the doctor to easily determine whether the tip of the suture device is in contact with the atrial septum A1, facilitating subsequent surgical procedures. Simultaneously, the dispersed positioning rods 4041 also provide support for the tissue surrounding the foramen ovale A. The capture net 3010 located in the left atrium A3 also provides support by contacting the tissue surrounding the foramen ovale A. By using multiple positioning rods 4041 and the columnar capture net 3010 to clamp the tissue around the foramen ovale A from both sides, sufficient support is provided to the tissue, facilitating puncture.

[0115] The main tube 4010 also has a second chamber 4012 and multiple third chambers 4013. The second chamber 4012 is configured for the inner tube 5030 to pass through, and the third chambers 4013 are configured for the suture needle 1030 to pass through. A shaft hole 4043 is also formed at the center of the front end seat 4040. The shaft hole 4043 and the second chamber 4012 are coaxially distributed to facilitate the passage of the inner tube 5030 into the left atrium A3. A needle hole 40131 is formed on the side wall of the main tube 4010 outside the third chamber 4013. The bending device 4000 also includes multiple guide posts 4050. One end of each guide post 4050 is fixed to the end of the front end seat 4040 near the main tube 4010, and the other end of each guide post 4050 is placed inside the third chamber 4013. The guide posts 4050 are configured for the suture needle 1030 to pass through the main tube 4010. A guide channel is provided inside the guide post 4050, and a guide hole 4051 corresponding to the position of the needle hole 40131 is provided on the side wall of the guide post 4050. The guide hole 4051 is connected to one end of the guide channel, and the other end of the guide channel is configured for the needle 1030 to enter. The guide post 4050 guides the needle 1030 in the third chamber 4013, making it easier for the needle 1030 to pass through the needle hole 40131 at a specific angle. At least two sets of developing elements 4052 are provided on the multiple guide posts 4050. The number of developing elements in different sets can be the same or different. For example, two sets of developing elements 4052 are provided on the multiple guide posts 4050, one set containing one developing element 4052 and the other set containing two developing elements 4052. The developing elements 4052 are configured to distinguish the guide posts 4050 at different positions.

[0116] Multiple third chambers 4013 are arranged in an array around the axis of the main tube 4010. Four third chambers 4013 are configured, and each third chamber 4013, guide post 4050, and suture needle 1030 is correspondingly arranged. A developing element 4052 is respectively provided on the outer wall of any two adjacent guide posts 4050. One of the two guide posts 4050 with a developing element 4052 has one developing element 4052, and the other guide post 4050 with a developing element 4052 has two developing elements 4052. A developing gap is formed between the two developing elements 4052 on the same guide post 4052, and the developing gap is greater than the axial length of the developing element 4052. At least one first bending wire 4023 is provided between the two guide posts 4050 with developing elements 4052.

[0117] As shown in Figure 25, some of the four guide posts 4050 have imaging elements 4052 installed on their outer walls. For example, if there are one, two, three, or four guide posts 4050 in a clockwise direction, and there is only one bending direction, then the first bending screw 4023 is placed between the first guide post 4050 and the fourth guide post 4050. That is, one imaging element 4052 is installed on the first guide post 4050, and two imaging elements 4052 are installed on the fourth guide post 4050. The imaging distance between the two imaging elements 4052 on the fourth guide post 4050 is not less than the axial length of the imaging element 4052 on the first guide post 4050. This arrangement makes it convenient for doctors to use the device by rotating it. In the imaging device, when the imaging elements on the first guide post 4050 and the fourth guide post 4050 form three imaging points on the imaging device, and these three imaging points form a straight line, it is a suitable and safe needle exit angle. At this time, the doctor can exit the needle for subsequent surgery. If two-way bending is required, two first bending wires 4023 need to be set between the first guide post 4050 and the fourth guide post 4050, and between the second guide post 4050 and the third guide post 4050, respectively. Imaging elements 4052 can be set on the first guide post 4050 and the fourth guide post 4050, or on the second guide post 4050 and the third guide post 4050, respectively. It should be noted that the imaging point refers to the point-like state seen on the imaging device by the axial cross-section of the imaging element 4052. The actual cross-section of the imaging element 4052 is rectangular. Since the cross-section of the imaging element 4052 is relatively small compared to the suture system, the imaging element 4052 is regarded as an approximately point-like structure on the imaging device.

[0118] The following explanation uses the example of setting developing elements 4052 on the first guide post 4050 and the fourth guide post 4050: For example, the developing element 4052 is annular, with one developing element 4052 on the first guide post 4050 and two developing elements 4052 on the fourth guide post 4050; alternatively, the first guide post 4050 may have a short developing element 4052 and the fourth guide post 4050 may have a long developing element 4052; or, the first guide post 4050 may have a developing pattern 1 engraved on it. The four guide posts 4050 are engraved with imaging patterns 2. In short, it is possible to distinguish the first guide post 4050 and the fourth guide post 4050 under X-ray, that is, to distinguish the first suture needle 1030 and the second suture needle 1030. At this time, in a clockwise direction, as shown in Figure 25, the order of the four guide posts 4050 can be distinguished. For example, the one on the left that is closer to the first guide post 4050 is the second guide post 4050. The four guide posts 4050 and the four push rods 1090 are pre-corresponded one by one.

[0119] The purpose of the imaging element 4052 being positioned on a specific guide post 4050 is to facilitate the one-to-one correspondence between the suture needle 1030 and its corresponding push rod 1090 during X-ray irradiation, making it easier for the surgeon to operate and avoiding surgical risks caused by incorrectly pushing the suture needle 1030. When it is necessary to adjust a specific suture needle 1030, the imaging element 4052 can help determine which push rod 1090 on the needle delivery handle 1010 corresponds to the suture needle 1030 that needs adjustment, avoiding the risks of incorrect adjustment of the suture needle 1030.

[0120] Based on the function of the developing element 4052, besides being ring-shaped, it can also be replaced with other forms. For example, cutting the guide post 4050 into a specific shape can achieve a similar effect. The developing element 4052 does not have to be placed on the guide post 4050; it can be other materials, such as cylindrical precious metal, embedded at any part of the front end of the main tube 4010, as long as it corresponds one-to-one with the sewing needle 1030 to help determine the sewing needle 1030. The number of developing elements 4052 listed above is merely an example to minimize the number of developing elements 4052 and simplify the structure. Of course, in other embodiments, a developing element 4052 can be provided on each guide post 4050.

[0121] As shown in Figures 26-27, the bending device 4000 in this embodiment further includes a second bending structure 4070, which includes a second rotating shaft 4071, a second turntable 4072, and a second bending wire 4073. From the front end to the rear end of the main tube 4010, the main tube 4010 includes a needle-out section 4015, a first flexible section 4016, a second flexible section 4017, and a main body section 4018 connected in sequence. The first bending structure 4020 is configured to bend the first flexible section 4016, and the second bending structure 4070 is configured to bend the second flexible section 4017. The bending directions of the second bending structure 4070 and the first bending structure 4020 are opposite. For example, as shown in Figure 27, the first flexible section 4016 bends downwards, and the second flexible section 4017 bends upwards accordingly. The bending of the second flexible section 4017 can compensate for the positional deviation caused by the bending of the first flexible section 4016.

[0122] An adapter 4080 is fixed between the first flexible segment 4016 and the second flexible segment 4017. A fourth chamber (not shown) is provided inside the main tube 4010, and a second wire inlet hole 4014 communicating with the fourth chamber is opened on the side wall of the main tube 4010 between the front and rear ends. Depending on the application scenario of the second bending wire 4073, the fourth chamber can be opened on the main tube 4010 between the adapter 4080 and the second wire inlet hole 4014. Similarly, depending on the application scenario of the first bending wire 4023, the first chamber 4011 can be opened on the main tube 4010 between the front end of the main tube 4010 and the first wire inlet hole 40111.

[0123] The second rotating shaft 4071 and the second turntable 4072 are fixedly connected. One end of the second bending wire 4073 is fixed to the adapter 4080, and the other end of the second bending wire 4073 passes through the fourth chamber and the second wire inlet hole 4014 and is fixed to the second turntable 4072. The second turntable 4072 is configured to rotate synchronously with the second rotating shaft 4071 to tighten or loosen the second bending wire 4073.

[0124] In the second bending structure 4070, two of each of the second turntable 4072 and the second bending wire 4073 are provided. A second protrusion and a second positioning bead (not shown) are also provided between the second turntable 4072 and the fixing block 4030. A second connecting rod 4074, fixedly connected to the second bending wire 4073, is also provided on the second turntable 4072. A second bending cap 4075 is also provided corresponding to the second rotating shaft 4071. The second bending structure 4070 and the first bending structure 4020 have the same structural principle and can also realize bending functions in two opposite directions. Therefore, the second bending structure 4070 is not described in detail here. As shown in Figures 26-27, the first bending structure 4020 and the second bending structure 4070 can be staggered to facilitate operation and simplify the bending device 4000. When the first bending structure 4020 and the second bending structure 4070 are staggered, an assembly plate 4032 is provided on the side of the fixing block 4030 facing the bending top cover 4091, and a second positioning bead is provided between the corresponding second turntable 4072 and the assembly plate 4032.

[0125] As shown in Figures 28-35, the suture system also includes an exhaust device 5000 configured to exhaust air from the tube body in the suture system. The tube body in the suture system includes a main tube 4010, an inner tube 5030, and multiple suture needles 1030. The main tube 4010 includes a second chamber 4012 and multiple third chambers 4013, which are spaced apart around the axis of the second chamber 4012. The inner tube 5030 is movably sleeved on the second chamber 4012, and the suture needles 1030 are movably sleeved on the third chambers 4013. The exhaust device 5000 includes a first exhaust structure 5010 and a second exhaust structure 5020.

[0126] The first exhaust structure 5010 includes an exhaust pipe 5011, a first knob 5012, a knob cap 5013, and a first sealing ring 5014. One end of the exhaust pipe 5011 is detachably connected to the first knob 5012, and the other end of the exhaust pipe 5011 is detachably connected to the knob cap 5013. The first sealing ring 5014 is located inside the exhaust pipe 5011 and contacts the first knob 5012. An injection port is provided on the knob cap 5013 or the exhaust pipe 5011 on the side of the first sealing ring 5014 away from the first knob 5012. The first knob 5012 is configured to allow the main body tube 4010 to pass through or through the exhaust pipe 5011. The first knob 5012 is also configured to compress the first sealing ring 5014, so that the first sealing ring 5014 and the main body tube 4010 are tightly fitted radially on the outer periphery. Alternatively, the first knob 5012 is also configured to be away from the first sealing ring 5014, so that the first sealing ring 5014 and the main body tube 4010 are spaced apart radially on the outer periphery.

[0127] As shown in Figure 31, the second exhaust structure 5020 includes a first tubular member 5021, a second sealing ring (not shown), and a second knob 5022. One end of the first tubular member 5021 is sleeved with the end of the main tube 4010 away from the first exhaust structure 5010, and the other end of the first tubular member 5021 is sleeved with the second knob 5022. The second sealing ring is located inside the first tubular member 5021 and is in contact with the second knob 5022. The second knob 5022 is configured to allow the inner tube 5030 to pass through and be placed inside the main tube 4010. The second knob 5022 is also configured to compress the second sealing ring, so that the second sealing ring and the inner tube 5030 are tightly fitted radially on the outer periphery. Alternatively, the second knob 5022 is also configured to be away from the second sealing ring, so that the second sealing ring and the main tube 4010 are spaced apart radially on the outer periphery.

[0128] When venting is required, the cap 5013 is connected to the vent pipe 5011, and liquid is injected into the vent pipe 5011 through the injection port. The first sealing ring 5014 is tightly fitted with the main body pipe 4010, and the second sealing ring and the inner pipe 5030 are distributed at intervals.

[0129] As shown in Figures 28-29, specifically, a first channel 5011a and a second channel 5011b are connected axially in the exhaust pipe 5011, with the radial dimension of the first channel 5011a being smaller than that of the second channel 5011b. An internal thread is provided in the second channel 5011b, and a first knob 5012 is threadedly connected to the internal thread of the exhaust pipe 5011. A first sealing ring 5014 is placed at the end of the second channel 5011b near the first channel 5011a. An external thread is provided on the outer side wall of the exhaust pipe 5011 away from the second channel 5011b, and a screw cap 5013 is threadedly connected to the external thread on the exhaust pipe 5011. A sealing ring 5015 is provided on the outer wall of the exhaust pipe 5011. The sealing ring 5015 is located at the end of the external thread near the second channel 5011b. When the screw cap 5013 and the exhaust pipe 5011 are threadedly connected, the two ends of the sealing ring 5015 abut against the exhaust pipe 5011 and the screw cap 5013, respectively. A liquid injection pipe 5011c is provided on the outer wall of the exhaust pipe 5011. A liquid injection channel 5011d is formed inside the liquid injection pipe 5011c. The end of the liquid injection channel 5011d near the exhaust pipe 5011 is the liquid injection port. The first exhaust structure 5010 also includes a receiving tube 5016, which is fixed inside the first channel 5011a. Part of the receiving tube 5016 extends outside the first channel 5011a, that is, outside the exhaust pipe 5011. The receiving tube 5016 can temporarily house the front end of the main body tube 4010, especially the front end seat 4040 and the multiple positioning rods 4041 on the front end seat 4040. As shown in Figure 35, the receiving tube 5016, which temporarily houses the main body tube 4010, the front end seat 4040, and the positioning rods 4041, is connected to the tail end 10432 of the sheath tube 5050 so that the positioning rods 4041, the front end seat 4040, and the main body tube 4010 can be inserted into the sheath tube 5050.

[0130] As shown in Figure 31, the second exhaust structure 5020 also includes a second tubular structure 5023. The second tubular structure 5023 is inclined relative to the first tubular structure 5021. The first tubular structure 5021 and the second tubular structure 5023 are similar to a pipe structure. The spaces inside the first tubular structure 5021 and the second tubular structure 5023 are connected. A valve 5024 is provided on the second tubular structure 5023 to control the connection between the space inside the second tubular structure 5023 and the outside world.

[0131] Regarding the tube connection in the suturing system: The suturing system mainly includes a main tube 4010, an inner tube 5030, a reinforcing sheath core 5040, and a connecting tube 3020 connecting to the capture net 3010. The reinforcing sheath core 5040 is a tube structure, as shown in Figure 32. The inner tube 5030 is fitted inside the second chamber 4012 of the main tube 4010, with a portion protruding through it. The end of the reinforcing sheath core 5040 is a tapered tube. The function of the reinforcing sheath core 5040 is to guide the inner tube 5030. First, the tapered portion of the reinforcing sheath core 5040 passes through the interatrial septum A1 of the orifice A, and then the inner tube 5030 follows through the interatrial septum A1 of the orifice A. After the inner tube 5030 passes through the interatrial septum A1 of the foramen ovale A and reaches the left atrium A3, the reinforcing sheath core 5040 can be removed. Then, the strip-shaped capture net 3010 passes through the inner tube 5030 and out through the connecting tube 3020 to reach the left atrium A3. Based on this, in the embodiments of this application, the second exhaust structure 5020 can be configured as four depending on the tube body connection.

[0132] As shown in Figure 30, three second exhaust structures 5020 are provided from left to right. The second exhaust structure 5020 on the left is sealed and fixedly connected to the rear end of the main tube 4010 through a first tubular member 5021. The inner tube 5030 passes through the second knob 5022 in the second exhaust structure 5020 on the left and enters the second chamber 4012 of the main tube 4010. The end of the inner tube 5030 away from the front end of the main tube 4010 is sealed and fixedly connected to the first tubular member 5021 in the middle second exhaust structure 5020. The reinforcing sheath core 5040 passes through the second knob 5022 in the middle second exhaust structure 5020 and enters the inner tube 5030. The end of the reinforcing sheath core 5040 away from the front end of the main tube 4010 is sealed and fixedly connected to the first tubular member 5021 in the second exhaust structure 5020 on the right. The fourth second exhaust structure 5020 and the proximal end 3021 of the connecting tube 3020 in the suture gripping device 3000 are connected together. Specifically, the end of the first tubular part 5021 in the fourth second exhaust structure 5020 away from the second knob 5022 is sealed and fixedly connected to the proximal end 3021 of the connecting tube 3020.

[0133] As shown in Figure 30, when no venting is performed, the cap 5013 in the first venting structure 5010 is removed, and the first knob 5012 is rotated so that the first sealing ring 5014 and the main body tube 4010 are radially spaced apart. The remaining first venting structures 5010 can be moved to the end of the main body tube 4010 near the bending handle 4090, and then the first knob 5012 is used to make the first sealing ring 5014 and the main body tube 4010 radially tightly fitted together.

[0134] When exhaust is required, as shown in Figure 33, the first exhaust structure 5010 (excluding the cap 5013) is moved to the front end of the main tube 4010 by operating the first knob 5012. At this time, the front end of the main tube 4010, the front end seat 4040, and the positioning rod 4041 are all housed in the receiving tube 5016, and the cap 5013 and the exhaust pipe 5011 are threaded together. The second knob 5022 of the second exhaust structure 5020 on the main tube 4010, the second knob 5022 of the second exhaust structure 5020 on the inner tube 5030, and the second knob 5022 of the second exhaust structure 5020 on the reinforcing sheath core 5040 are all in the loosened state. Taking the main tube 4010 as an example, when the second knob 5022 is in the loosened state, the second sealing rings in the main tube 4010 and the second exhaust structure 5020 are radially spaced upwards. Physiological saline is injected into the vent pipe 5011 through the injection channel 5011d. The physiological saline flows from the gap between the main tube 4010 and the vent pipe 5011 towards the cap 5013, and then flows through the end of the receiving tube 5016 away from the first knob 5012 into the second chamber 4012, the third chamber 4013, the inner tube 5030, the reinforcing sheath core 5040, and the suture needle 1030 of the main tube 4010. As shown in Figure 33, a first viewing window B is opened on the bending top cover 4091, through which the suture needle 1030 can be seen entering the main tube 4010. A second viewing window C is opened on the needle exit top cover 1011, through which the end of the guide tube 2050 away from the suture needle 1030 can be seen. If water is seen flowing out through the first viewing window B, it indicates that the third chamber 4013 containing the sewing needle 1030 has been successfully vented. If water is seen flowing out through the second viewing window C, it indicates that the sewing needle 1030 has been successfully vented. If water is seen flowing out through the second knob 5022 corresponding to the main tube 4010, it indicates that the second chamber 4012 has been successfully vented. If water is seen flowing out through the second knob 5022 corresponding to the inner tube 5030, it indicates that the inner tube 5030 has been successfully vented. If water is seen flowing out through the second knob 5022 corresponding to the reinforcing sheath core 5040, it indicates that the reinforcing sheath core 5040 has been successfully vented. To better ensure the venting effect, the structure shown in Figure 33 can be positioned with the left side lower than the right. Venting of the capture net 3010 and its corresponding connecting tube 3020 can be performed independently. When the exhaust is finished, the second knob 5022 corresponding to the main tube 4010, the second knob 5022 corresponding to the inner tube 5030, the second knob 5022 corresponding to the reinforcing sheath core 5040, and the second knob 5022 corresponding to the connecting tube 3020 are all in the tightened state. Taking the main tube 4010 as an example, when the second knob 5022 is tightened, the outer circumference of the main tube 4010 and the second sealing ring are radially and tightly fitted to prevent external gas from entering the tube body, so as to maintain the exhaust effect.

[0135] The four second exhaust structures 5020 can be identical, with adjustments made based on the different dimensions of the corresponding tubes. The second tubular component 5023 within the four second exhaust structures 5020 can be filled with contrast agent. The contrast agent can be used to determine whether the corresponding tube has moved to the appropriate position. Taking the inner tube 5030 as an example, contrast agent is filled into the second tubular component 5023 corresponding to the inner tube 5030. The contrast agent flows forward along the inner tube 5030, i.e., into the body. When the contrast agent flows out from the end of the inner tube 5030 placed inside the body, it can be seen. The contrast agent can then be used to determine whether the current position of the inner tube 5030 is appropriate, allowing for timely adjustments in case of abnormal instrument operation.

[0136] As shown in Figure 34, in other embodiments, in addition to venting air by introducing saline solution into the injection tube 5011c, air can also be vented by introducing saline solution into the second tubular structure 5023. For example, when venting air from the main tube 4010 alone, saline solution can be introduced into the second tubular structure 5023 corresponding to the main tube 4010. The second knobs 5022 in the multiple second venting structures 5020 are all in the tightened state. The knob cap 5013 is separated from the venting tube 5011 at this time. If water can be seen flowing out at the receiving tube 5016, it indicates that the second chamber 4012 of the main tube 4010 has been successfully vented.

[0137] As shown in Figure 35, during the use of the suture system, it is necessary to remove the front end seat 4040 and other structures inside the storage tube 5016 so that the guide wire 5060 can pass through. For example, if the guide wire 5060 passes through the reinforcing sheath core 5040, the structures inside the storage tube 5016 need to be vented again. At this time, physiological saline can be injected into the injection tube 5011c in the first venting structure 5010. If water is seen flowing out at the storage tube 5016, it indicates that the structure at the storage tube 5016 has been successfully vented.

[0138] The suture system in this embodiment may include, in addition to the needle delivery device 1000 and the suture control device 2000, one or more, or even all, of the following: a suture gripping device 3000, a bending device 4000, and an exhaust device 5000. The suture gripping device 3000 is configured to grip the suture 2010, the bending device 4000 is configured to bend the front end of the main tube 4010 that houses the needle 1030, and the exhaust device 5000 is configured to exhaust air from the suture system. Specifically, in this embodiment, the suture system includes a needle delivery device 1000, a suture control device 2000, a suture gripping device 3000, a bending device 4000, and an exhaust device 5000 to illustrate its operating principle. The application of the suture system is specifically taken as an example of foramen ovale closure surgery. In addition to structural heart diseases, such as foramen ovale closure surgery, atrial septal defect surgery, and ventricular septal defect surgery, the suture system in this application can also be used in other fields that require suturing, such as vascular suturing surgery.

[0139] The specific operating principle of the suture system is as follows:

[0140] Step 1: As shown in Figures 29 and 33, the relevant tubes of the suture system are vented by injecting physiological saline into the injection tube 5011c, while simultaneously venting the second chamber 4012, the third chamber 4013, the suture needle 1030, the inner tube 5030, and the reinforcing sheath core 5040 on the main tube 4010. The specific principle of venting and the operation during and after venting can be found in the principle introduction of the venting device 5000 mentioned above, and will not be repeated here.

[0141] Step 2: As shown in Figure 37, guidewire 5060 enters the left atrium A3.

[0142] Step 3: As shown in Figure 38, the sheath 5050 enters the right atrium A2 near the interatrial septum A1 along the guidewire 5060.

[0143] Step 4: As shown in Figure 35, vent air from the front end of the suture system, specifically at the front end of the main tube 4010 and the front end seat 4040. Pass the guide wire 5060 through the reinforcing sheath core 5040 until the guide wire 5060 passes through the second knob 5022 corresponding to the reinforcing sheath core 5040, so that the front end of the main tube 4010 or the receiving tube 5016 is close to the tail of the sheath tube 5050. Retract the front end of the main tube 4010, the front end seat 4040, and the positioning rod 4041 into the receiving tube 5016, and inject physiological saline into the injection tube 5011c until the liquid flows out from the receiving tube 5016 (the upward-sloping port).

[0144] Step 5: As shown in Figure 39, the front end of the main tube 4010 enters the right atrium A2. Specifically, the sheath tube 5050 is first inserted into the tail end through the receiving tube 5016, and then the main tube 4010 containing the inner tube 5030, the reinforcing sheath core 5040, and the suture needle 1030 is inserted into the sheath tube 5050.

[0145] Step 6: As shown in Figure 40, the sheath 5050 is retracted, causing multiple positioning rods 4041 to open. Simultaneously, the inner tube 5030 and the reinforcing sheath core 5040 are pushed until the front end of the inner tube 5030 extends beyond the interatrial septum A1 by a certain distance. The reinforcing sheath core 5040 itself extends beyond the inner tube 5030 by a certain distance. The suture system is pushed (e.g., via the bending handle 4090, the needle exit handle 1010, or the suture handle 2030) to bring the positioning rods 4041 closer to the interatrial septum A1. The positioning rods 4041 have a certain degree of elasticity and rigidity; upon contact with the interatrial septum A1, they can be deformed by the pressure of the interatrial septum A1. Therefore, the position where the positioning rods 4041 begin to deform can be determined from the image. At this position, the positioning rods 4041 are tightly against the interatrial septum A1 without causing the interatrial septum A1 to bear excessive external force.

[0146] Step 7: With the sheath 5050 and inner tube 5030 fixed in place, remove the reinforcing sheath core 5040 along with the guide wire 5060 from the body. After the reinforcing sheath core 5040 and guide wire 5060 are removed from the body, the reinforcing sheath core 5040 and guide wire 5060 in Figure 40 will disappear.

[0147] Step 8: Push the capture net 3010. The sheath 5050 and inner tube 5030 remain stationary. Push the capture net 3010 to the left atrium A3 along the inner tube 5030 through the connecting tube 3020, and pull the state switching wire 3050 to make the capture net 3010 cylindrical (as shown in Figure 18). Retract the inner tube 5030 into the main tube 4010, and retract the capture net 3010 until the lower end of the cylindrical capture net 3010 is in close contact with the atrial septum A1 (in this state, the atrial septum A1 is clamped by the positioning rod 4041 and the capture net 3010).

[0148] Step 9: Bending. Rotate the first bending cap 4026 and the second bending cap 4075 on the bending device 4000 to bend both the first flexible segment 4016 and the second flexible segment 4017, as shown in Figure 27. During the bending process, keep the positioning rod 4041 in close contact with the atrial septum A1 without pulling or pushing it, which would cause significant deformation of the atrial septum A1.

[0149] Step 10: As shown in Figure 41, rotate the imaging device. The imaging device refers to the imaging equipment used by the doctor during surgery, such as an X-ray imaging device. Rotate the device until the screen shows the four guide posts 4050 overlapping in pairs (this ensures that the imaging plane of the device and the bending plane of the instrument are parallel, accurately determining the position of the front end of the main tube 4010 inside the body, ensuring safe needle withdrawal). Alternatively, as shown in Figure 25, the two imaging elements 4052 on the fourth guide post 4050 are axially spaced, with the distance between the two imaging elements 4052 on the fourth guide post 4050 not less than the axial length of the imaging element 4052 on the first guide post 4050. After the imaging device rotates, the three imaging elements 4052 will display three imaging points on the imaging device. When these three imaging points are in a straight line, the needle can be safely withdrawn. This method makes it easier for the doctor to determine that the imaging plane of the device and the bending plane of the instrument are parallel.

[0150] Step 11: As shown in Figure 42, needles are ejected simultaneously. The developing ring 3023 is fitted onto the outer wall of the connecting tube 3020 near the capture net 3010. Observe the image; when the lower edge of the developing ring 3023 coincides with the upper edge of the front seat 4040, the relative position of the capture device and the front seat 4040 is the preset relative position, allowing for safe needle ejection. The suture handle (the collective name for the bending handle 4090, the needle ejection handle 1010, and the suture handle 2030) remains fixed, for example, as shown in Figure 36. Simultaneously press the pressing structures 1110 on both sides of the needle ejection top cover 1011 and push the needle ejection top cover 1011 forward to complete needle ejection. Combine this with the image to determine the needle ejection distance, ensuring that the longest needle 1030 does not exceed the top of the cylinder of the capture net 3010, ensuring safe needle ejection. After releasing the pressing structures 1110, the position of the needle 1030 is fixed, completing simultaneous needle ejection.

[0151] Step 12: As shown in Figure 43, adjust a single needle 1030 individually (this step can be skipped if simultaneous needle emergence already meets the thread-pushing requirements). Keep the sewing machine handle stationary, loosen the locking cap 1054, and determine the needle 1030 that needs adjustment based on the image. Pushing or pulling the corresponding push button 1100 of the needle 1030 will adjust the position of the needle 1030 relative to the capture net 3010 (adjustment ensures that the sharp part of the needle 1030 is within the cylinder of the capture net 3010, ensuring smooth thread pushing). After adjusting the needle 1030, tighten the locking cap 1054. After adjusting a single needle, for example, the two needles in Figure 43 will be symmetrically distributed, with equal lengths within the capture net 3010.

[0152] Step 13: As shown in Figure 44, push the thread. Remove the protective cover 2110, pull the return thread knob 2083 upwards to disengage the return thread knob 2083 from the return thread shaft 2081, and remove the thread push assembly 2020 from both sides of the thread handle 2030. Push the movable second tube 2023 on the thread push assembly 2020 to align it with the preceding first tube 2022, and then continue to push forward (as shown by the black arrow in the figure) until the second tube 2023 on the thread push assembly 2020 contacts the limit connector 2024, at which point the stroke of the thread push assembly 2020 ends. After the thread push is completed, as shown in Figure 45, there are four threads 2010 inside the capture net 3010.

[0153] Step 14: As shown in Figures 45-46, retrieve the needle 1030. Rotate the first adjusting cap 4026 and the second adjusting cap 4075 back to their initial positions. Loosen the locking cap 1054, move the push button 1100 to the far right, and then tighten the locking cap 1054 again. Press the pressing mechanism 1110 and move the needle outlet cap 1011 to the far right to complete the retrieval of the needle 1030.

[0154] Step 15: As shown in Figures 47-48, capture the suture 2010. Keep the suture device handle stationary, push the inner tube 5030 to the left atrium A3 beyond the interatrial septum A1 and hold it stationary. Pull the capture net 3010 backward. When the cylindrical shape of the capture net 3010 is retracted to about half, remove the suture pusher assembly 2020. Then continue pulling the capture net 3010 until it leaves the inner tube 5030. Remove the suture 2010 captured by the capture net 3010 from the capture net 3010 and confirm the number.

[0155] Step 16: Retrieve suture 2010 (Normally not necessary. Suture 2010 is designed for special situations, such as when suture 2010 cannot be fully pushed out of needle 1030 or when suture 2010 is not caught. In such cases, suture 2010 needs to be retrieved to ensure the surgery can be performed safely under any circumstances). Press and rotate the suture return knob 2083 to retrieve suture 2010 into needle 1030 for easy re-pushing.

[0156] Step 17: Retract the instrument. With the sheath 5050 fixed in place, withdraw the main tube 4010 along with the inner tube 5030 out of the body through the sheath 5050.

[0157] Step 18: As shown in Figures 49-50, cut the suture. Insert the suture 2010 into the suture cutting device, which enters the right atrium A2 along the sheath 5050. Tighten the suture 2010, tie a knot in the suture 2010, and then cut the suture 2010.

[0158] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented. Industrial applicability

[0159] In summary, this application provides a suture system that can achieve both simultaneous and individual needle ejection, effectively improving the efficiency and safety of the suture system, enhancing the needle puncture effect, and increasing the success rate of surgery.

Claims

1. A suture system, characterized in that, include: A needle delivery device and a suture control device; the needle delivery device is configured to push out or retract the needle, and the suture control device is configured to push out or retract the suture thread; The needle dispensing device includes a needle dispensing handle, a guide, a pusher, and a sewing needle; The needle dispensing handle includes a slidably connected needle dispensing top cover and needle dispensing bottom cover; The guide is located inside the needle outlet handle, and the guide is fixedly connected to the needle outlet top cover; The pushing body and the guide member are movably connected; At least two suture needles are configured, and the suture needles are fixed to the pusher body. The pusher body and the suture needles are arranged in a one-to-one correspondence. The needle outlet top cover is configured to slide relative to the needle outlet bottom cover to drive the guide member to move; the pusher is configured to move along the guide member to drive the connected suture needle to move.

2. The suture system as claimed in claim 1, characterized in that, The needle-dispensing device further includes a locking member and at least two locking bars, the locking bars being fixed to the pushing body; the locking member has a first state and a second state, when the locking member is in the first state, the locking member is configured to simultaneously lock at least two of the locking bars, and when the locking member is in the second state, the locking member is configured to release the locking of at least two of the locking bars.

3. The suture system as claimed in claim 2, characterized in that, The locking element includes locking pins and a locking plate; a locking hole is provided on the needle outlet cover, the locking plate is located inside the needle outlet handle, a portion of the locking pins pass through the locking hole and are threadedly connected to the locking plate, and the remaining locking pins are placed outside the needle outlet handle; when the locking element is in a first state, the locking plate and at least two locking bars are in contact; when the locking element is in a second state, the locking plate and at least two locking bars are separated, and the locking pins are configured to change the position of the locking plate relative to the at least two locking bars by rotation.

4. The suture system as claimed in claim 2 or 3, characterized in that, The guide includes a first baffle, a second baffle, a third baffle, and a conical block, wherein the conical block is fixed to the side of the first baffle away from the second baffle; The pushing body includes a first pushing body and a second pushing body, and two of the first pushing body and the second pushing body are configured. The suture needle is fixed on the same side of the first pushing body and the second pushing body near the conical block. The end of the suture needle away from the third baffle passes through the conical block. The conical block is configured to guide the suture needle into the main body tube. The locking strip is fixed on both the first pushing body and the second pushing body. A first push shaft is fixed between the first baffle and the second baffle. The first push body is movably sleeved on the first push shaft, and at least one first push shaft is sleeved on each first push body. A second push shaft is fixed between the second baffle and the third baffle. The second push body is movably sleeved on the second push shaft, and at least one second push shaft is sleeved on each second push body. The needle outlet cover has multiple adjustment holes. The first pusher and the second pusher are both fixed with push rods on the side facing the needle outlet cover. Part of the push rods pass through the adjustment holes and are placed outside the needle outlet handle.

5. The suture system as described in any one of claims 1 to 4, characterized in that, The two side walls of the needle outlet cover are symmetrically provided with pressing structures. The pressing structure includes a pressing plate, an elastic sleeve and a snap-fit ​​component. The pressing plate is provided with a toothed part and a connecting rod on both sides. The toothed part is located on the side away from the needle outlet cover, and the connecting rod is located on the side close to the needle outlet cover. Multiple connecting rods are configured. The end of the connecting rod away from the pressing plate passes through the side wall of the needle outlet cover and is placed inside the needle outlet cover; The elastic sleeve is disposed on the connecting rod between the pressing plate and the needle outlet cover, and the snap fastener is fixed to the end of the connecting rod away from the pressing plate. The elastic sleeve, the snap fastener and the connecting rod are all disposed in a one-to-one correspondence. The needle outlet cover has symmetrically arranged female teeth on both side walls, and the female teeth are configured to mesh with the female teeth, wherein the number of teeth in the female teeth is less than the number of teeth in the female teeth.

6. The suture system as claimed in any one of claims 1 to 5, characterized in that, The suture control device includes a suture and a suture pusher assembly; the end of the suture is configured to pass through the needle, and the suture inside the needle is provided with an abutment; the suture pusher assembly includes a pusher wire, one end of which abuts against the abutment, and the other end of which is located outside the needle handle, and the pusher wire is configured to push the suture.

7. The suture system as claimed in claim 6, characterized in that, The push wire assembly further includes a first tube, a second tube, and a limiting connector. The first tube is fixedly sleeved on the push wire, and the second tube is movably sleeved on the push wire. One end of the push wire is the push wire end, and the other end is the free end. The first tube is located near the push wire end, and the second tube is located near the free end. The limiting connector is fixedly connected to the free end.

8. The suture system as claimed in claim 7, characterized in that, The suture control device also includes a suture handle, an adapter, and a guide tube. The suture handle has an adapter groove on its outside. The adapter has a first docking hole and a second docking hole connected along the axial direction. The suture needle and the guide tube are distributed at both ends of the adapter. Part of the suture needle is fixedly sleeved in the first docking hole, and part of the guide tube is fixedly sleeved in the second docking hole. The first tube body, which is partially close to the push end, is movably placed inside the guide tube. The second tube body and the limiting joint are located outside the suture handle. The second tube body is detachably fixed inside the adapter groove. The suture, push-thread assembly, adapter, guide tube, and needle are arranged in a corresponding manner. When the suture needs to be pushed out of the needle, the second tube is inserted into the suture handle and abuts against the first tube, and the push-thread end abuts against the abutment.

9. The suture system as claimed in claim 8, characterized in that, The suture handle includes a suture top cover and a suture bottom cover; the suture control device also includes a thread spool, a thread bobbin, and a return shaft located inside the suture handle. The thread wheel seat is located at the end of the guide tube away from the adapter. The thread wheel seat has multiple thread wheel holes on the side facing the sewing top cover. The thread wheel seat has multiple thread pushing grooves. The thread pushing grooves and the thread wheel holes are arranged in a one-to-one correspondence. One end of the thread pushing groove is tangent to and communicates with the thread wheel hole. The other end of the thread pushing groove extends to the end face of the thread wheel seat near the adapter. The thread spool is rotatably fixed inside the thread wheel hole, and multiple turns of the sewing thread are wound on the thread spool. The end of the sewing thread passes through the thread push groove and the guide tube and enters the sewing needle. The return shaft and the bobbin are fixedly connected, and the return shaft is configured to rotate the bobbin to perform a return operation. The suture top cover is made of transparent material. The spool has a marking position on the side facing the suture top cover. The spool, return shaft, spool hole, suture, pusher assembly, adapter, guide tube and suture needle are all set up one by one. The guide tubes are configured in multiple ways, and the multiple guide tubes are spatially spaced apart.

10. The suture system as claimed in any one of claims 1 to 9, characterized in that, It also includes a suture gripping device, the suture gripping device comprising: The capture net has a retracted state and an extended state. The capture net is strip-shaped in the retracted state and column-shaped in the extended state. A connecting tube has a proximal end and a distal end, the distal end of which is connected to one end of the capture net; A reinforcing member is connected to the other end of the capture net; A support tube, connected to the connecting tube, has one end connected to the distal end, and the other end of the support tube is a free end. The support tube is located within the capture net, and the free end of the support tube is configured to abut or sleeve against the reinforcing member. In this case, the reinforcing member is located on the capture net in its deployed state. A state switching wire is provided, one end of which passes through the connecting pipe and the support pipe into the capture net and is connected to the reinforcing member. The other end of the state switching wire is located outside the connecting pipe. The state switching wire is configured to move along the axial direction of the connecting pipe to switch the state of the capture net.

11. The suture system according to any one of claims 1 to 10, characterized in that, It also includes a bending adjustment device, which comprises a main tube and a first bending adjustment structure; The main tube has a front end and a rear end, and a first chamber is provided inside the main tube. A first wire inlet hole is opened on the side wall of the main tube. The first wire inlet hole communicates with the first chamber and is located between the front end and the rear end. The first bending structure includes a first turntable, a first rotating shaft, and a first bending wire; one end of the first bending wire is fixed to the front end of the main tube, and the other end of the first bending wire passes through the first chamber and the first wire inlet hole and is fixed to the first turntable; The first turntable and the first rotating shaft are fixedly connected. The first turntable is configured to rotate synchronously with the first rotating shaft to tighten or loosen the first bending wire.

12. The suture system as claimed in claim 11, characterized in that, The bending device also includes a fixing block and a first positioning bead; The first rotating shaft and the fixed block are rotatably connected, and two first turntables are configured, with the two first turntables located at both ends of the fixed block; The first turntable has a plurality of first protrusions on one end face facing the fixed block. The plurality of first protrusions are arranged in an array around the axis of the first turntable, and a first snap-fit ​​space is formed between adjacent first protrusions. The fixed block has a plurality of first positioning beads fixed on one side facing the first turntable. The beads of the first positioning beads are snapped into the first snap-fit ​​space. The beads of the first positioning beads can be placed in different first snap-fit ​​spaces when the first rotating shaft rotates. The first turntable, the first bending wire, and the first wire inlet hole are all arranged in a one-to-one correspondence. The ends of the two first bending wires away from the front end of the main tube are distributed on both sides of the axis of the main tube, so that when the first shaft rotates, either of the two first bending wires is in a tightened state, and the other of the two first bending wires is in a relaxed state.

13. The suture system as claimed in claim 12, characterized in that, The bending device further includes a second bending structure, which includes a second rotating shaft, a second rotating disk, and a second bending wire. From the front end of the main tube to the rear end of the main tube, the main tube includes a needle-out section, a first flexible section, a second flexible section and a main body section connected in sequence. The first bending structure is configured to bend the first flexible section, and the second bending structure is configured to bend the second flexible section. The bending directions of the second bending structure and the first bending structure are opposite. An adapter is fixed between the first flexible segment and the second flexible segment; a fourth chamber is provided inside the main tube; a second wire inlet hole is opened on the side wall of the main tube; the second wire inlet hole communicates with the fourth chamber and is located between the front end and the rear end; The second rotating shaft and the second turntable are fixedly connected; one end of the second bending wire is fixed to the adapter seat, and the other end of the second bending wire passes through the fourth chamber and the second wire inlet hole and is fixed to the second turntable; the second turntable is configured to rotate synchronously with the second rotating shaft to tighten or loosen the second bending wire.

14. The suture system according to any one of claims 11 to 13, characterized in that, The bending device also includes a front end seat, which is connected to the front end of the main tube; The front end seat has a threading hole, through which the first bending wire passes to become a double-strand bending wire. One end of the double-strand bending wire is fixed to the threading hole, and the other end of the double-strand bending wire passes through the first chamber and is fixed to the first turntable. Alternatively, it may include an adapter post, one end of which is fixed to the end of the front end seat near the main tube. The adapter post and the first bending wire are fixedly connected, and the adapter post is sleeved and fixed in the first chamber.

15. The suture system as claimed in claim 14, characterized in that, The main tube also has a second chamber and multiple third chambers. The second chamber is configured for the inner tube to pass through, and the third chamber is configured for the suture needle to pass through. The bending device also includes multiple guide posts. One end of each guide post is fixed to the end of the front end seat near the main tube, and the other end of each guide post is placed in the third chamber. The guide posts are configured to allow the suture needle to pass through the main tube. At least two sets of developing elements are provided on the multiple guide posts. The developing elements are configured to distinguish the guide posts in different positions.

16. The suture system as claimed in claim 15, characterized in that, Multiple third chambers are arranged in an array around the axis of the main tube. Four third chambers are configured, and the third chambers, guide posts, and suture needles are arranged in a one-to-one correspondence. A developing element is respectively provided on the outer wall of any two adjacent guide posts. One of the two guide posts with a developing element has one developing element, and the other of the two guide posts with a developing element has two developing elements. A developing gap is formed between the two developing elements on the same guide post, and the developing gap is greater than the axial length of the developing element. At least one first bending wire is provided between the two guide posts with developing elements.

17. The suture system according to any one of claims 1 to 16, characterized in that, It also includes an exhaust device configured to exhaust air from the tube in the suture system, the tube in the suture system comprising a main tube, an inner tube, and a plurality of the suture needles, the main tube comprising a second chamber and a plurality of third chambers, the plurality of third chambers being spaced apart around the axis of the second chamber, the inner tube being movably sleeved in the second chamber, and the suture needles being movably sleeved in the third chambers; the exhaust device includes: a first exhaust structure and a second exhaust structure; The first exhaust structure includes an exhaust pipe, a first knob, a knob cap, and a first sealing ring. One end of the exhaust pipe is detachably connected to the first knob, and the other end of the exhaust pipe is detachably connected to the knob cap. The first sealing ring is located inside the exhaust pipe and contacts the first knob. An injection port is provided on the knob cap or the exhaust pipe on the side of the first sealing ring away from the first knob. The first knob is configured to allow the main body tube to pass through or through the exhaust pipe. The first knob is also configured to compress the first sealing ring so that the first sealing ring and the outer periphery of the main body tube are tightly fitted. Alternatively, the first knob is also configured to be away from the first sealing ring so that the first sealing ring and the outer periphery of the main body tube are spaced apart. The second exhaust structure includes a first tubular component, a second sealing ring, and a second knob. One end of the first tubular component is sleeved with the end of the main tube away from the first exhaust structure, and the other end of the first tubular component is sleeved with the second knob. The second sealing ring is located inside the first tubular component and contacts the second knob. The second knob is configured to allow the inner tube to pass through and be placed inside the main tube. The second knob is also configured to compress the second sealing ring so that the second sealing ring and the outer periphery of the inner tube are tightly fitted. Alternatively, the second knob is also configured to be away from the second sealing ring so that the second sealing ring and the outer periphery of the main tube are spaced apart. When venting is required, the cap is connected to the vent pipe, and liquid is injected into the vent pipe through the injection port. The first sealing ring is tightly fitted to the main body pipe, and the second sealing ring is spaced apart from the inner pipe.

18. The suture system according to any one of claims 1 to 17, characterized in that, It also includes a suture gripping device, a bending device, and an exhaust device; the suture gripping device is configured to grip the suture thread, the bending device is configured to bend the front end of the main tube that houses the suture needle, and the exhaust device is configured to exhaust air from the suture system.

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