Locking and cutting integrated device of medical thread, thread hooking device and locking and cutting integrated system

Abstract

This application provides a locking and cutting integrated device, a hooking device, and a locking and cutting integrated system for medical sutures. The locking and cutting integrated device includes: a housing with a through-hole communicating with its inner cavity; the inner cavity having a first inner surface and a second inner surface arranged sequentially along a first direction, the first inner surface being inclined relative to the second inner surface to make the distal end of the inner cavity open; a locking assembly including a locking member and a fixing member; the locking member being located within the housing, having locking teeth and a locking groove; the fixing member being located between the locking teeth and the locking groove; the locking member being used to move along the first direction under the action of an external force, causing the locking teeth and the locking groove to approach each other under the action of the first inner surface and / or the second inner surface, thereby deforming the fixing member; and a cutting assembly including a cutting member located within the housing, used to move along a second direction to the through-hole under the action of an external force. This application integrates the locking assembly and the cutting assembly, reducing the difficulty of surgical operations.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a locking and cutting integrated device, a hooking device, and a locking and cutting integrated system for medical sutures. Background Technology

[0002] During surgery, it is often necessary to knot and secure medical sutures (including but not limited to sutures, sutures used for artificial chordae tendineae repair, and sutures used for edge-to-edge valve repair) and remove excess sutures. Traditional surgery involves the surgeon manually knotting and securing the sutures under direct visualization during open surgery, followed by removal of excess sutures. With advancements in technology, various minimally invasive and interventional surgeries are becoming increasingly common, such as laparoscopic surgery and transcatheter interventional procedures. In these procedures, the operator typically needs to remotely manipulate the sutures outside the patient's body through a smaller operating window to knot and remove excess sutures.

[0003] Existing suture-locking devices and suture-cutting devices are usually two separate instruments. Generally, the suture-locking device is inserted into the body first, and the locking pins within the device are manipulated to secure the suture. Then, the suture-locking device is withdrawn, and the suture-cutting device is inserted to remove the excess suture. However, the separate insertion and removal of the suture-locking device and the suture-cutting device from the patient's body leads to complex surgical procedures and a longer overall operation time. Summary of the Invention

[0004] In order to overcome the shortcomings of the separate entry and exit of the suture locking device and the suture cutting device in minimally invasive surgery and interventional surgery, which leads to complicated surgical procedures and long operation time, this application provides a medical suture locking and cutting integrated device, a suture hooking device and a locking and cutting integrated system.

[0005] The specific technical solution is as follows:

[0006] This application provides a medical suture locking and cutting integrated device, comprising:

[0007] A housing having an inner cavity, the housing having a through port communicating with the inner cavity, the inner cavity having a first inner surface and a second inner surface arranged sequentially along a first direction, the first direction being from the distal end of the housing to the proximal end of the housing, the first inner surface being inclined relative to the second inner surface so that the distal end of the inner cavity is open;

[0008] A wire-locking assembly includes a locking member and a wire-fixing member. The locking member is located within the housing and has locking teeth and locking grooves. The wire-fixing member is located between the locking teeth and the locking grooves. The wire-fixing member is used to allow a medical wire to pass through. The medical wire enters the inner cavity through the wire-fixing member and extends through the guide port. The locking member is used to move along a first direction under the action of an external force, so that the locking teeth and the locking groove move closer to each other under the action of the first inner surface and / or the second inner surface, thereby deforming the wire-fixing member and locking the medical wire. In a cross-section parallel to the first direction, the contact point between the locking teeth and the wire-fixing member is located at any position between the middle of the wire-fixing member and near the proximal end of the wire-fixing member.

[0009] A suture assembly includes a suture cutter located within the housing, which is used to move along a second direction to the through-hole under the action of an external force to cut the medical suture; wherein the second direction is the reverse direction of the first direction.

[0010] The locking member is used to move along the first direction under the action of external force, so that the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, so that the fixing member deforms into a V-shape and locks the medical thread.

[0011] And / or, in a cross section parallel to the first direction, an included angle α is formed between the two side walls of the locking tooth, and 0°≤α≤90°, and the end of the locking tooth near the fixed member has a curvature K1, and 8mm. -1 ≤K1≤12mm -1 The locking groove has an included angle β between its two side walls, with 0° ≤ β ≤ 90°, and the end of the locking groove away from the fixing member has a curvature K2 of 2mm. -1 ≤K2≤3mm -1 .

[0012] In a cross-section parallel to the first direction, the end of the locking tooth near the wire fixing member is correspondingly positioned to the end of the locking groove away from the wire fixing member. The end of the locking tooth near the wire fixing member forms a first arc with a radius of θ1. The end of the locking groove away from the wire fixing member forms a second arc with a radius of θ2.

[0013] Where θ1 = θ2.

[0014] In a cross section parallel to the first direction, the two side walls of the locking tooth are provided in a one-to-one correspondence with the two side walls of the locking groove, and α=β;

[0015] When the locking tooth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, a first distance L1 is formed between the end of the locking tooth near the end of the wire fixing member and the end of the locking groove away from the end of the wire fixing member; a second distance L2 is formed between one side wall of the locking tooth and one side wall of the locking groove; and a third distance L3 is formed between the other side wall of the locking tooth and the other side wall of the locking groove.

[0016] Where L1=L2=L3.

[0017] In a cross section parallel to the first direction, the locking tooth is close to the proximal end of the fixing member, and the ratio of the distance between the contact point between the locking tooth and the proximal end of the fixing member and the distal end of the fixing member to the length of the fixing member is between 50% and 90%.

[0018] And / or, in a cross section parallel to the first direction, the locking groove is close to the proximal end of the fixing member, and the ratio of the groove length of the locking groove to the length of the fixing member is between 40% and 90%.

[0019] The locking member includes a base and a first locking arm and a second locking arm extending outward from the base. The first locking arm has a locking tooth on the side near the second locking arm, and the second locking arm has a locking groove on the side near the first locking arm.

[0020] The distal end of the first locking arm has a notch to form a gap between the distal ends of the first locking arm and the distal ends of the second locking arm; in a cross section parallel to the first direction, and when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, the length of the gap is between 0.5mm and 2mm, and the height of the gap is between 0.5mm and 2mm.

[0021] The housing has a first outer surface, a second outer surface, and a third outer surface arranged sequentially along a first direction;

[0022] The diameter of the second outer surface decreases sequentially along the first direction, and in a cross section parallel to the first direction, the angle between the second outer surface and the first outer surface is between 91° and 170°, and the angle between the second outer surface and the third outer surface is between 91° and 170°.

[0023] And / or, the ratio of the diameter of the third outer surface to the diameter of the first outer surface is between 60% and 85%.

[0024] In this configuration, a portion of the first outer surface is located outside the first inner surface, and another portion of the first outer surface, the second outer surface, and the third outer surface are located outside the second inner surface. The passage is used to connect the inner cavity with the outside through the second outer surface and the second inner surface.

[0025] Wherein, the distal end of the fixing member extends outward to form a boss. In a cross section parallel to the first direction, and when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the fixing member to deform and lock the medical thread, the outer diameter of the boss is greater than the height of the gap.

[0026] The tangent is disposed on the locking member and surrounds the outer periphery of the locking member. The locking member is used to drive the tangent to move synchronously under the action of external force. The length ratio of the tangent to the length of the locking member is between 40% and 70%.

[0027] The distal end of the housing has a rounded corner structure;

[0028] And / or, the tangent element has a rounded corner structure at its proximal end;

[0029] And / or, the inner surface of the fixing component is provided with one of a threaded protrusion, a threaded groove, a plurality of spaced protrusions, and a plurality of spaced grooves, so that the inner surface of the fixing component forms a concave-convex structure;

[0030] And / or, in a plane parallel to the first direction, the projected pattern of the locking member completely overlaps with the projected pattern of the housing, so that the locking member is completely located within the housing;

[0031] And / or, the included angle formed between the first inner surface and the second inner surface is between 130° and 170°;

[0032] And / or, the distance between the distal end of the tangent and the distal end of the guide port is between 2mm and 4mm.

[0033] This application also provides a thread hooking device for use in conjunction with the thread locking and cutting integrated device described in any of the above claims, the thread hooking device comprising a hooking component and a control component;

[0034] The hook member passes through the through-hole of the medical wire locking and cutting integrated device and the fixing member of the medical wire locking and cutting integrated device, and is exposed at the distal end of the housing of the medical wire locking and cutting integrated device. The portion of the hook member exposed at the distal end of the housing forms a hook structure. The hook member is configured to be driven by the control member to drive the medical wire from the fixing member into the inner cavity of the medical wire locking and cutting integrated device and out through the through-hole via the hook structure.

[0035] The control component has a snap-fit ​​groove on its side wall, and the snap-fit ​​groove extends along a first direction and penetrates the control component.

[0036] The hooking device further includes a limiting member with a limiting groove. The limiting member is used to contact the hooking structure through the limiting groove to limit the displacement of the hooking structure. The limiting groove has a cross-section that is a combination of two or more types of straight lines, broken lines, and wavy lines.

[0037] This application also provides a medical suture locking and cutting integration system, including an operating device, a connecting component, and the medical suture locking and cutting integration device and the medical suture hooking device described in any of the above claims.

[0038] The connection component includes:

[0039] A connector, the distal end of which is connected to the housing of the locking and cutting integrated device, and the proximal end of which is connected to the operating device;

[0040] A transmission component is disposed within the connector. The distal end of the transmission component extends into the housing and is connected to the locking component and / or the tangential component. The proximal end of the transmission component is connected to the operating device. The transmission component is used to drive the locking component and / or the tangential component to move under the action of the operating device.

[0041] This application has at least the following beneficial effects:

[0042] This application provides a locking and cutting integrated device for medical sutures, comprising: a housing having an inner cavity, a through-hole communicating with the inner cavity, the inner cavity having a first inner surface and a second inner surface arranged sequentially along a first direction, the first direction being from the distal end of the housing to the proximal end of the housing, the first inner surface being inclined relative to the second inner surface to make the distal end of the inner cavity open; and a suture locking assembly including a locking member and a suture fixing member, the locking member being located inside the housing, the locking member having locking teeth and locking grooves, the suture fixing member being located between the locking teeth and locking grooves, the suture fixing member being used to allow the medical suture to pass through, the medical suture entering the inner cavity through the suture fixing member. The cavity extends through the guide port, and the locking member is used to move along a first direction under the action of external force, so that the locking teeth and locking groove approach each other under the action of the first inner surface and / or the second inner surface, so that the fixing member deforms and locks the medical suture; wherein, in a cross section parallel to the first direction, the contact point between the locking teeth and the fixing member is located at any position between the middle of the fixing member and near the proximal end of the fixing member; the suture tangent assembly includes a suture tangent located in the housing, used to move along a second direction to the guide port under the action of external force to cut the medical suture; wherein, the second direction is the opposite direction of the first direction.

[0043] The medical suture locking and cutting integrated device of this application integrates a suture locking component and a suture cutting component, reducing the number of instrument changes during surgery, simplifying the surgical procedure, and thus shortening the operation time. It also reduces the risks associated with instrument changes, helping to reduce surgical complications and improve the success rate of the surgery.

[0044] This application selects to shape the bending segment at any position between the middle of the fixing member and near the proximal end of the fixing member. Compared with shaping the bending segment at the distal end of the fixing member, this application reduces the pressure and deformation force required to form the bending segment of the fixing member. It effectively prevents the problem that improper shaping position of the bending segment will result in excessive pressure and deformation force, causing irreversible deformation of the locking member. This would lead to the problem that after the tangent assembly cuts the suture, the fixing member is pressed by the locking member and cannot be smoothly disengaged from the inner cavity. This reduces the risk of surgical failure, makes the locking operation of the fixing member more convenient and efficient, and improves the operability and safety of the entire locking process.

[0045] This application also provides a hooking device for medical sutures, for use in conjunction with the aforementioned locking and cutting integrated device for medical sutures. The hooking device includes a hooking member and a control member. The hooking member passes through the guide port and the fixing member and protrudes from the distal end of the housing. The portion of the hooking member protruding from the distal end of the housing forms a hooking structure. The hooking member is configured to be driven by the control member so as to drive the medical suture from the fixing member into the inner cavity and out through the guide port via the hooking structure.

[0046] This application uses a hooking device to guide the medical suture from the fixed part into the inner cavity and out through the guide port, so that the time and effort of threading the medical suture during the operation is not required. This makes it possible to quickly pass the medical suture through the fixed part and the guide port, reduce the operation time, improve the overall efficiency of the operation, and the hooking device has high precision and high reliability in moving the medical suture.

[0047] This application also provides a medical suture locking and cutting integration system, including an operating device, a connecting component, the aforementioned medical suture locking and cutting integration device, and the aforementioned medical suture hooking device; the connecting component includes: a connector, the distal end of which is connected to the housing of the locking and cutting integration device, and the proximal end of which is connected to the operating device; a transmission component, which is disposed within the connector, the distal end of which extends into the housing and is connected to the locking component and / or the cutting component, and the proximal end of which is connected to the operating device, the transmission component being used to drive the locking component and / or the cutting component to move under the action of the operating device.

[0048] The medical suture locking and cutting integrated system provided in this embodiment integrates a suture locking component, a suture cutting component, and a suture hooking device. Its rich functionality eliminates the need for extensive time and effort spent on suture threading during surgery, improving overall surgical efficiency. Furthermore, the hooking device provides high precision and reliability in moving the suture. Simultaneously, it automates the suture locking and cutting process, facilitating surgeons' operations and reducing manual interventions and instrument changes, thereby enhancing surgical efficiency. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 Schematic diagram of the medical thread locking and cutting integrated device provided in this embodiment Figure 1 ;

[0051] Figure 2 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 1 ;

[0052] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle;

[0053] Figure 4 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 2;

[0054] Figure 5 for Figure 4 A magnified view of a portion of region B in the middle;

[0055] Figure 6 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 3 ;

[0056] Figure 7 for Figure 6 A magnified view of a portion of region C in the middle;

[0057] Figure 8 Schematic diagram of the medical thread locking and cutting integrated device provided in this embodiment Figure 2 ;

[0058] Figure 9 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 4 ;

[0059] Figure 10 Schematic diagram of the medical thread locking and cutting integrated device provided in this embodiment Figure 3 ;

[0060] Figure 11 Schematic diagram of the medical thread locking and cutting integrated device provided in this embodiment Figure 4 ;

[0061] Figure 12 A cross-sectional schematic diagram of the wire fixing component for the medical wire provided in this embodiment;

[0062] Figure 13 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 5 ;

[0063] Figure 14 A schematic diagram of the cross-section of the medical wire locking and cutting integration device provided in this embodiment, parallel to the first direction. Figure 6 ;

[0064] Figure 15 Schematic diagram of the medical thread locking and cutting integrated device provided in this embodiment Figure 5 ;

[0065] Figure 16 Schematic diagram of the medical thread locking and cutting integrated system provided in this embodiment Figure 1 ;

[0066] Figure 17 Schematic diagram of the medical thread locking and cutting integrated system provided in this embodiment Figure 2 ;

[0067] Figure 18 Schematic diagram of the medical thread locking and cutting integrated system provided in this embodiment Figure 3 ;

[0068] Figure 19 This is a schematic diagram of the structure of the limiting member provided in this embodiment;

[0069] Figure 20 This is a schematic diagram of the structure of the control component provided in this embodiment;

[0070] Figure 21 This is a schematic diagram of the structure of the control component and the hook component provided in this embodiment;

[0071] Figure 22 This is a schematic diagram of the structure of the sub-control component one provided in this embodiment;

[0072] Figure 23 This is a schematic diagram of the structure of the second sub-controller provided in this embodiment;

[0073] Figure 24 This is a structural schematic diagram of the hook and fastener provided in this embodiment.

[0074] Figure label:

[0075] 10-Medical Thread Locking and Cutting Integrated Device; 11-Housing; 12-Thread Locking Assembly; 13-Thread Cutting Assembly; 111-Inner Cavity; 112-Conducting Port; 113-First Inner Surface; 114-Second Inner Surface; 115-First Outer Surface; 116-Second Outer Surface; 117-Third Outer Surface; 121-Locking Member; 122-Thread Fixing Member; 131-Thread Cutting Member; 132-Blocking Member; 1211-Base; 1212-First Locking Arm; 1213-Second Locking Arm; 121 4-Locking arm; 1221-Boss; 1222-Concave-convex structure; 12121-Locking tooth; 12122-Notch; 12131-Locking groove; 12141-Force-bearing part; 12142-Reinforcing part; 12143-Elastic part; 121211-End of locking tooth near the wire fastener; 121212-Side wall of locking tooth; 121311-End of locking groove away from the wire fastener; 121312-Side wall of locking groove; X-First direction; Y-Second direction;

[0076] 20 - Connecting assembly; 21 - Connector; 22 - Transmission component;

[0077] 30 - Operating device;

[0078] 40-Hooking device; 41-Hooking component; 42-Control component; 43-Limiting component; 411-Hooking structure; 421-Snap-fit ​​groove; 422-Fixing component; 423-Sub-control component one; 424-Sub-control component two; 431-Limiting groove; 4211-Elastic component; 4231-First notch; 4232-First receiving cavity; 4233-Protrusion; 4241-Second notch; 4242-Second receiving cavity; 4243-Mounting groove; 4311-First limiting groove; 4312-Second limiting groove. Detailed Implementation

[0079] Various embodiments of this application will be described more fully below. This application may have various embodiments, and adjustments and changes may be made therein. It should be noted that, unless otherwise expressly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0080] In this application, those skilled in the art should understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0081] In embodiments of the present invention, the proximal end is the end closer to the operator, and the distal end is the end farther away from the operator.

[0082] In embodiments of the present invention, such as Figures 1 to 13 As shown, this embodiment provides a medical thread locking and cutting integrated device 10, including:

[0083] The housing 11 has an inner cavity 111 and a through port 112 communicating with the inner cavity 111. The inner cavity 111 has a first inner surface 113 and a second inner surface 114 arranged sequentially along a first direction X, where the first direction X is from the distal end of the housing 11 to the proximal end of the housing 11. The first inner surface 113 is inclined relative to the second inner surface 114 so that the distal end of the inner cavity 111 is open.

[0084] The locking assembly 12 includes a locking member 121 and a fixing member 122. The locking member 121 is located inside the housing 11 and is provided with locking teeth 12121 and locking grooves 12131. The fixing member 122 is located between the locking teeth 12121 and the locking grooves 12131. The fixing member 122 is used to allow a medical suture to pass through. The medical suture enters the inner cavity 111 through the fixing member 122 and extends out through the guide port 112. The locking member 121 is used to move along the first direction X under the action of an external force, so that the locking teeth 12121 and the locking grooves 12131 move closer to each other under the action of the first inner surface 113 and / or the second inner surface 114, so that the fixing member 122 deforms and locks the medical suture. In a cross section parallel to the first direction X, the contact point between the locking teeth 12121 and the fixing member 122 is located at any position between the middle of the fixing member 122 and the proximal end of the fixing member 122.

[0085] The suture assembly 13 includes a suture cutter 131 located inside the housing 11, which is used to move along the second direction Y to the through port 112 under the action of an external force to cut the medical suture; wherein the second direction Y is the opposite direction to the first direction X.

[0086] The medical suture locking and cutting integrated device 10 provided in this embodiment integrates a suture locking assembly 12 and a suture cutting assembly 13, reducing the number of instrument changes during surgery, lowering the difficulty of the surgical operation, and thus shortening the operation time. It also reduces the risks increased by changing instruments, helping to reduce surgical complications and improve the success rate of the surgery.

[0087] In this embodiment, the bending segment is shaped at any position between the middle of the suture fixing member 122 and the proximal end of the suture fixing member 122. Compared with shaping the bending segment at the distal end of the suture fixing member 122, this embodiment reduces the pressure and deformation force required to form the bending segment of the suture fixing member 122. This effectively prevents the suture fixing member 122 from being pressed by the locking member 121 after the suture cutting assembly 13 cuts the suture, thus preventing it from being smoothly detached from the inner cavity 111. This reduces the risk of surgical failure and makes the locking operation of the suture fixing member 122 more convenient and efficient, improving the operability and safety of the entire locking process.

[0088] In an embodiment of the present invention, in a cross section parallel to the first direction X, the length of the fixed wire 122 is between 0.5 mm and 3 mm.

[0089] In an embodiment of the present invention, in a cross section parallel to the first direction X, the length of the fixed wire member 122 is between 1 mm and 3 mm.

[0090] In an embodiment of the present invention, in a cross section parallel to the first direction X, the length of the fixed wire 122 is between 1 mm and 2 mm.

[0091] In an embodiment of the present invention, the length of the fixed wire member 122 is 1.5 mm in a cross section parallel to the first direction X.

[0092] In an embodiment of the present invention, in a cross section parallel to the first direction X, the distance between the contact point between the locking tooth 12121 and the wire fixing member 122 and the proximal end of the wire fixing member 122 is between 0.05mm and 1.5mm.

[0093] In an embodiment of the present invention, in a cross section parallel to the first direction X, the distance between the contact point between the locking tooth 12121 and the wire fixing member 122 and the proximal end of the wire fixing member 122 is between 0.3 mm and 1 mm.

[0094] In an embodiment of the present invention, in a cross section parallel to the first direction X, the distance between the contact point between the locking tooth 12121 and the wire fixing member 122 and the proximal end of the wire fixing member 122 is 0.6 mm.

[0095] like Figure 5 As shown in the embodiments of this application, the locking member 121 is used to move along the first direction X under the action of an external force, so that the locking teeth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, so that the wire fixing member 122 deforms into a V-shape and locks the medical wire.

[0096] In this embodiment, the fixing member 122 deforms into a V-shape after being locked, which shortens the overall length of the fixing member 122. The shorter fixing member 122 can effectively reduce the risk of the fixing member 122 hitting human heart tissue, thereby reducing the risk of damage to it.

[0097] like Figure 3 As shown in the embodiment of this application, in a cross section parallel to the first direction X, an included angle α is formed between the two side walls 121212 of the locking tooth, and 0°≤α≤90°. The end 121211 of the locking tooth near the fixed wire member has a curvature K1 and 8mm. -1 ≤K1≤12mm -1 The two side walls 121312 of the locking groove form an included angle β, where 0°≤β≤90°. The end 121311 of the locking groove away from the fixed wire member has a curvature K2, which is 2mm. -1 ≤K2≤3mm -1 .

[0098] In this embodiment, the included angles (α, β) formed between the two side walls 121212 of the locking tooth and the two side walls 121312 of the locking groove are both within 0°. The locking teeth 12121 and locking groove 12131 are positioned at 90° to each other, so that when they approach each other under the action of the first inner surface 113 and / or the second inner surface 114, they can apply a uniform and strong locking force to the wire fastener 122, ensuring the effective transmission and distribution of the locking force, preventing the wire fastener 122 from slipping or loosening, and enhancing the locking effect.

[0099] Furthermore, in this embodiment, the end 121211 of the locking tooth near the end of the wire fastener has a curvature K1, and the end 121311 of the locking groove away from the end of the wire fastener has a curvature K2. This helps guide the locking tooth 12121 to smoothly enter the locking groove 12131. Moreover, K1 is greater than K2. When the locking tooth 12121 and the locking groove 12131 approach each other under the action of external force, the locking force on the wire fastener 122 tends to gradually increase, making the locking more stable and effective. This ensures that the wire fastener 122 is firmly clamped and is not easy to loosen or fall off, thus enhancing the locking effect.

[0100] Furthermore, during the locking process, the contact area between the locking teeth 12121 and the wire fastener 122, and the contact area between the locking groove 12131 and the wire fastener 122, gradually increase, which helps to disperse the locking force and reduce pressure concentration in local areas of the wire fastener 122. Therefore, this embodiment can reduce the risk of damage to the wire fastener 122 and protect the surface quality of the wire fastener 122.

[0101] In an embodiment of the present invention, 9mm -1 ≤K1≤11mm -1 In an embodiment of the present invention, K1 = 10 mm -1 .

[0102] In the embodiments of the present invention, 2.3mm -1 ≤K2≤2.7mm -1 In an embodiment of the present invention, K2 = 2.5 mm -1 .

[0103] In an embodiment of the present invention, α = 0°, and in a section parallel to the first direction X, the two side walls 121212 of the locking tooth are parallel.

[0104] In embodiments of the present invention, 30°≤α≤50°. In embodiments of the present invention, α=40°.

[0105] In an embodiment of the present invention, β = 0°, and in a cross section parallel to the first direction X, the two side walls 121312 of the locking groove are parallel.

[0106] In an embodiment of the present invention, 30°≤β≤50°. In an embodiment of the present invention, β=40°.

[0107] In an embodiment of the present invention, the distal end of the housing 11 has a rounded corner structure. This embodiment allows the distal end of the housing 11 to significantly reduce the contact area with the inner wall of the sheath when moving within the adapted sheath, thereby reducing friction and wear on the locking and cutting integrated device 10 and the inner wall of the sheath. This makes the movement of the locking and cutting integrated device 10 within the sheath smoother, reducing resistance caused by corner friction, and enabling the locking and cutting integrated device 10 to perform complex movements (e.g., turning) within the sheath, improving the flexibility and response speed of the locking and cutting integrated device 10.

[0108] In an embodiment of the present invention, in a plane parallel to the first direction X, the projected pattern of the locking member 121 completely overlaps with the projected pattern of the housing 11, so that the locking member 121 is completely located within the housing 11. This avoids the locking member 121 being exposed and abrading the inner wall of the sheath, and thus avoids increased movement resistance when the locking and cutting integrated device 10 moves. This embodiment ensures that the locking member 121 is completely located within the housing 11, making the movement of the locking and cutting integrated device 10 within the sheath smoother, while also enabling complex movements (e.g., turning).

[0109] like Figure 2 , 4 As shown in Figures 6, 10, and 11, in the embodiments of the present invention, the tangent member 131 is disposed on the locking member 121 and is arranged around the outer periphery of the locking member 121. The locking member 121 is used to drive the tangent member 131 to move synchronously under the action of external force. The length ratio of the tangent member 131 to the length of the locking member 121 is between 40% and 70%.

[0110] In an embodiment of the present invention, the outer diameter of a portion of the locking member 121 is equal to the inner diameter of the tangent member 131, and the outer surface of the tangent member 131 is in contact with the first inner surface 113.

[0111] In an embodiment of the present invention, the proximal end of the tangent member 131 and the proximal end of the locking member 121 form a flush surface.

[0112] In embodiments of the present invention, the length ratio of the tangent member 131 to the length of the locking member 121 is between 50% and 60%. In one embodiment of the present invention, the length ratio of the tangent member 131 to the length of the locking member 121 is 56%.

[0113] In this embodiment, by setting the tangent 131 on the locking member 121, the locking member 121 and the tangent 131 can move synchronously, which reduces the number of transmission members 22 required by the locking-cutting integrated device 10 and simplifies the transmission structure.

[0114] Meanwhile, the tangent 131 is arranged around the outer periphery of the locking member 121, which realizes a compact arrangement of the internal space of the housing 11, reduces space waste, helps to reduce the volume of the locking-cutting integrated device 10, and thus improves the smoothness of the movement of the locking-cutting integrated device 10.

[0115] Furthermore, in this embodiment, the length ratio of the tangent 131 to the locking member 121 is between 40% and 70%, so that the tangent 131 has a certain length, thereby reducing the distance that the tangent 131 needs to move to the guide port 112. This further reduces the length of the locking member 121 exposed in the housing 11 when the locking member 121 moves along the second direction Y to the guide port 112 to cut the medical thread under the action of external force, thus avoiding damage to human tissue caused by the exposed locking member 121 and improving the safety of the locking and cutting integrated device 10.

[0116] In an embodiment of the present invention, the proximal end of the tangent member 131 has a rounded corner structure. This embodiment allows both the distal and proximal ends of the tangent member 131 to significantly reduce the contact area with the first inner surface 113 through the rounded corner structure when the tangent member 131 moves along the first direction X or the second direction Y within the inner cavity 111 under the action of external force, thereby reducing friction and wear on the tangent member 131 and the first inner surface 113. This makes the movement of the tangent member 131 and the locking member 121 within the inner cavity 111 smoother and reduces resistance caused by corner friction.

[0117] like Figure 10-11 As shown, in an embodiment of the present invention, the tangent assembly 13 further includes a blocking member 132. The blocking member 132 is located at the distal end of the inner cavity 111 and disposed on the outer periphery of the locking member 121. In the initial state where the locking teeth 12121 are pre-pressed onto the fixing member 122, the blocking member 132 is located between the locking teeth 12121 and the guide port 112 and between the locking groove 12131 and the guide port 112. In this embodiment, the blocking member 132 is provided to cooperate with the tangent member 131. When the tangent member 131 moves to the guide port 112 and contacts the blocking member 132, the tangent is completed, which improves the success rate of tangenting. At the same time, the blocking member 132 can prevent the tangent member 131 from moving excessively in the second direction Y, thereby ensuring that the locking member 121 will not extend out of the housing 11 and touch the human heart tissue, causing damage to the heart tissue.

[0118] like Figure 4-5 As shown, in an embodiment of the present invention, in a cross section parallel to the first direction X, the end 121211 of the locking tooth near the end of the wire fixing member is correspondingly provided with the end 121311 of the locking groove away from the end of the wire fixing member. The end 121211 of the locking tooth near the end of the wire fixing member forms a first arc with a radius of θ1; the end 121311 of the locking groove away from the end of the wire fixing member forms a second arc with a radius of θ2.

[0119] Where θ1 = θ2.

[0120] In embodiments of the present invention, ≤θ1=θ2≤ .

[0121] In the embodiments of the present invention, θ1=θ2= .

[0122] In this embodiment, based on the fact that the curvature K1 of the first arc (i.e., the end 121211 of the locking tooth near the fixed member) is greater than the curvature K2 of the second arc (i.e., the end 121311 of the locking groove away from the fixed member), the end 121211 of the locking tooth near the fixed member and the end 121311 of the locking groove away from the fixed member are both arc-shaped in a cross section parallel to the first direction X, and the radian value θ1 of the first arc is equal to the radian value θ2 of the second arc. This increases the contact area between the end 121211 of the locking tooth near the fixed member and the fixed member 122, and between the end 121311 of the locking groove away from the fixed member and the fixed member 122. This helps to reduce the overall length of the fixed member 122 after locking, thereby significantly reducing the risk of the fixed member 122 accidentally contacting and affecting other surrounding tissues due to its excessive length after locking.

[0123] Meanwhile, the increased contact area between the locking teeth (end 121211 near the wire-fixing component) and the wire-fixing component 122, as well as between the locking groove (end 121311 away from the wire-fixing component) and the wire-fixing component 122, increases the contact area of ​​the locking teeth (end 121211 near the wire-fixing component) and the locking groove (end 121311 away from the wire-fixing component) on the wire-fixing component 122. This enhances the locking force, improves the locking effect, and increases the locking success rate.

[0124] In this embodiment of the invention, the line connecting the center of the circle containing the first arc and the center of the circle containing the second arc is perpendicular to the first direction X. In this embodiment, given that the radian measure θ1 of the first arc and the radian measure θ2 of the second arc are equal, the line connecting the center of the circle containing the first arc and the center of the circle containing the second arc is further made perpendicular to the first direction X. This ensures that after the locking teeth 12121 and the locking groove 12131 lock the wire fastener 122, the line connecting the bend formed by the locking teeth near the end 121211 pressing the wire fastener 122 and the bend formed by the locking groove away from the end 121311 pressing the wire fastener 122 (i.e., the line connecting the center of the circle containing the first arc and the center of the circle containing the second arc) is perpendicular to the first direction X. The wire fastener 122 is connected to a straight line perpendicular to the first direction X. After the locking teeth 12121 and locking groove 12131 lock the wire fastener 122, the wire fastener 122 located between the end 121211 of the locking teeth near the end of the wire fastener and the end 121311 of the locking groove away from the end of the wire fastener is axially symmetrically fan-shaped. This helps to reduce the lateral dimension of the wire fastener 122 in the cross section parallel to the first direction X, that is, it helps to reduce the overall length of the wire fastener 122 after locking. This significantly reduces the risk of the wire fastener 122 accidentally contacting and affecting other surrounding tissues due to its excessive length after locking.

[0125] like Figure 2-3 As shown in the embodiment of the present invention, in a cross section parallel to the first direction X, the two side walls 121212 of the locking tooth and the two side walls 121312 of the locking groove are arranged in a one-to-one correspondence, and the included angle α formed between the two side walls 121212 of the locking tooth is equal to the included angle β formed between the two side walls 121312 of the locking groove.

[0126] like Figure 6-7 As shown, when the locking teeth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, causing the wire fixing member 122 to deform and lock the medical wire, a first distance L1 is formed between the end 121211 of the locking teeth near the end of the wire fixing member and the end 121311 of the locking groove away from the end of the wire fixing member. A second distance L2 is formed between one side wall of the corresponding locking teeth 12121 and one side wall of the locking groove 12131. A third distance L3 is formed between the other side wall of the corresponding locking teeth 12121 and the other side wall of the locking groove 12131.

[0127] Where L1=L2=L3.

[0128] In this embodiment, when the locking teeth 12121 lock the wire fastener 122, the end 121211 of the locking teeth near the wire fastener, the two side walls 121212 of the locking teeth, the end 121311 of the locking groove away from the wire fastener, and the two side walls 121212 of the locking teeth all contact the wire fastener 122. This increases the contact area between the locking teeth 12121 and the wire fastener 122 and between the locking groove 12131 and the wire fastener 122, and increases the locking force applied to the fastener, thereby enhancing the locking force, improving the locking effect and the success rate of locking.

[0129] In the embodiments of the present invention, 0.2mm≤L1=L2=L3≤2mm.

[0130] like Figure 2-3 As shown, in an embodiment of the present invention, in a cross section parallel to the first direction X, the locking tooth 12121 is close to the proximal end of the fixing member 122, and the ratio of the distance between the contact point between the locking tooth 12121 and the proximal end of the fixing member 122 to the distal end of the fixing member 122 and the length of the fixing member 122 is between 50% and 90%. Wherein, if the contact type between the locking tooth 12121 and the proximal end of the fixing member 122 is surface contact, then "the distance between the contact point between the locking tooth 12121 and the proximal end of the fixing member 122 to the distal end of the fixing member 122" refers to the distance between the midpoint of the contact surface between the locking tooth 12121 and the proximal end of the fixing member 122 and the distal end of the fixing member 122 in a cross section parallel to the first direction X.

[0131] In this embodiment, the bending segment is shaped at any position between the middle of the suture fixing member 122 and near the proximal end of the suture fixing member. Compared with shaping the bending segment at the distal end of the suture fixing member 122, this embodiment reduces the pressure and deformation force required to form the bending segment of the suture fixing member 122. This effectively prevents the suture fixing member from undergoing irreversible deformation due to improper shaping position of the bending segment, which could cause the suture fixing member to be pressed by the locking member after the suture cutting assembly, preventing it from smoothly detaching from the inner cavity. This reduces the risk of surgical failure and makes the locking operation of the suture fixing member 122 more convenient and efficient, improving the operability and safety of the entire locking process.

[0132] In embodiments of the present invention, the ratio of the distance between the contact point between the locking tooth 12121 and the proximal end of the fixing member 122 to the distal end of the fixing member 122 and the length of the fixing member 122 is between 50% and 70%. This embodiment selects any position between the middle of the fixing member 122 and near its proximal end for shaping the bending segment. Compared to shaping the bending segment at the distal end of the fixing member 122, this embodiment minimizes the pressure and deformation force required to form the bending segment of the fixing member 122, greatly optimizing the operability of the entire locking process.

[0133] In an embodiment of the present invention, in a cross section parallel to the first direction X, the locking groove 12131 is close to the proximal end of the fixing member 122, and the ratio of the groove length of the locking groove 12131 to the length of the fixing member 122 is between 40% and 90%.

[0134] In this embodiment, the bending segment is shaped at any position between the proximal end and the middle of the suture fixing member 122. Compared with shaping the bending segment at the distal end of the suture fixing member 122, this embodiment reduces the pressure and deformation force required to form the bending segment of the suture fixing member 122. This effectively prevents the suture fixing member from undergoing irreversible deformation due to improper shaping position of the bending segment, which could cause the suture fixing member to be pressed by the locking member after the suture cutting assembly, preventing it from smoothly detaching from the inner cavity. This reduces the risk of surgical failure and makes the locking operation of the suture fixing member 122 more convenient and efficient, improving the operability and safety of the entire locking process.

[0135] Meanwhile, the length of the locking groove 12131 in this embodiment has a reasonable ratio (40%-90%) to the length of the fixing member 122, which ensures the stability of the fixing member 122 after locking. At the same time, it increases the proportion of the bent section formed after the fixing member 122 is locked to the whole fixing member 122, and reduces the overall length of the fixing member 122 after locking. This significantly reduces the risk that the fixing member 122 may accidentally contact and affect other surrounding tissues due to its excessive length after locking.

[0136] In an embodiment of the present invention, in a cross section parallel to the first direction X, the locking groove 12131 is close to the proximal end of the fixing member 122, and the ratio of the groove length of the locking groove 12131 to the length of the fixing member 122 is between 50% and 60%.

[0137] like Figure 13-15 As shown, in an embodiment of the present invention, the locking member 121 includes a base 1211 and two spaced-apart locking arms 1214 extending outward from the base 1211. Each locking arm 1214 has a force-receiving portion 12141, a reinforcing portion 12142, and an elastic portion 12143 sequentially formed along a first direction X, and is connected to the base 1211 via the elastic portion 12143. One locking arm has a locking tooth 12121 on its force-receiving portion 12141, and the other locking arm has a locking groove 12131 on its force-receiving portion 12141.

[0138] The force-bearing part 12141 is in contact with the first inner surface 113, and the reinforcing part 12142 is in contact with the second inner surface 114.

[0139] When the locking member 121 is assembled inside the housing 11 (in the initial state, the locking teeth 12121 are pre-pressed on the fixing member 122), the elastic potential energy of the elastic part 12143 initially increases, causing the two locking arms to initially approach each other.

[0140] like Figure 13-14 As shown, when the base 1211 moves the two locking arms along the first direction X under the action of external force, the first inner surface 113 presses the force-bearing part 12141, and the elastic potential energy of the elastic part 12143 increases again. The two locking arms move closer to each other again, and the locking teeth 12121 and the locking groove 12131 move closer to each other, causing the wire fixing member 122 to deform and lock the medical wire.

[0141] When the base 1211 initially drives the two locking arms to move along the second direction Y under the action of external force (when the locking member 121 is completely inside the housing 11), the elastic part 12143 initially releases elastic potential energy, the two locking arms initially move away from each other, and the locking teeth 12121 and the locking groove 12131 initially move away from each other.

[0142] like Figure 15 As shown, when the base 1211 continues to drive the two locking arms to move along the second direction Y under the action of external force (when the locking member 121 is at least partially exposed at the far end of the housing 11), the elastic part 12143 releases elastic potential energy again, the two locking arms move away from each other again, and the locking teeth 12121 and the locking groove 12131 move away from each other again to release the fixing member 122.

[0143] In an embodiment of the present invention, in a cross section parallel to the first direction X, the height of the elastic portion 12143 (i.e., the thickness in a three-dimensional view) is between 0.1 mm and 1 mm.

[0144] In an embodiment of the present invention, the height (i.e., the thickness in a three-dimensional view) of the reinforcing part 12142 in a cross section parallel to the first direction X is between 0.3 mm and 2 mm. This embodiment increases the thickness of the reinforcing part 12142 to prevent irreversible deformation of the locking arm from affecting the release of the locking wire member 122 after locking, thereby improving the stability of the locking member 121.

[0145] In embodiments of the present invention, the included angle formed between the first inner surface 113 and the second inner surface 114 is between 130° and 170°.

[0146] In embodiments of the present invention, the included angle formed between the outer surface of the reinforcing part 12142 and the outer surface of the force-bearing part 12141 is between 130° and 170°.

[0147] like Figure 2As shown, in an embodiment of the present invention, the locking member 121 includes a base 1211 and a first locking arm 1212 and a second locking arm 1213 extending outward from the base 1211. The first locking arm 1212 has a locking tooth 12121 on the side near the second locking arm 1213, and the second locking arm 1213 has a locking groove 12131 on the side near the first locking arm 1212.

[0148] In an embodiment of the present invention, a positioning groove is provided on the second locking arm 1213, the positioning groove being close to the locking groove 12131, and the positioning groove is used to place the wire fixing component 122.

[0149] like Figure 6-7 As shown, in an embodiment of the present invention, a notch 12122 is formed at the distal end of the first locking arm 1212 to form a gap between the distal ends of the first locking arm 1212 and the distal ends of the second locking arm 1213; in a cross section parallel to the first direction X, and when the locking teeth 12121 and the locking grooves 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, causing the wire fixing member 122 to deform and lock the medical wire, the length of the gap is between 0.5mm and 2mm, and the height of the gap is between 0.5mm and 2mm.

[0150] This embodiment effectively avoids the situation where the distal ends of the first locking arm 1212 and the distal ends of the second locking arm 1213 pinch and injure surrounding tissues when the locking member 121 is performing the locking operation by forming a gap between the distal ends of the first locking arm 1212 and the distal ends of the second locking arm 1213. This improves the safety of the surgical operation, reduces the risk of surgical complications (such as tissue tearing, bleeding, hematoma formation, etc.), and promotes the patient's rapid postoperative recovery and good prognosis.

[0151] like Figure 4-5 As shown, in an embodiment of the present invention, the distal end of the wire fixing member 122 extends outward to form a boss 1221. In a cross section parallel to the first direction X, and when the locking teeth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, causing the wire fixing member 122 to deform and lock the medical wire, the outer diameter of the boss 1221 is greater than the height of the gap.

[0152] This embodiment effectively avoids the risk of surgical failure caused by the wire fixing component 122 being accidentally moved into the housing 11 by setting a boss 1221 on the wire fixing component 122, thereby improving the stability of the locking and cutting integrated device 10 and increasing the success rate of the surgery.

[0153] In embodiments of the present invention, the boss 1221 is annular, but is not limited thereto.

[0154] like Figure 12As shown, in an embodiment of the present invention, the inner surface of the wire fastener 122 is provided with threaded protrusions to form a concave-convex structure 1222 on the inner surface of the wire fastener 122. In another embodiment of the present invention, the inner surface of the wire fastener 122 is provided with threaded grooves to form a concave-convex structure 1222 on the inner surface of the wire fastener 122. In yet another embodiment of the present invention, the inner surface of the wire fastener 122 is provided with a plurality of spaced protrusions to form a concave-convex structure 1222 on the inner surface of the wire fastener 122. Finally, in yet another embodiment of the present invention, the inner surface of the wire fastener 122 is provided with a plurality of spaced grooves to form a concave-convex structure 1222 on the inner surface of the wire fastener 122.

[0155] In this embodiment, a concave-convex structure 1222 is formed on the inner surface of the wire fixing member 122 to increase the contact area between the wire fixing member 122 and the medical wire, and to improve the locking force of the wire fixing member 122 on the medical wire, thereby improving the wire locking effect of the wire fixing member 122.

[0156] like Figure 2 As shown, in an embodiment of the present invention, the housing 11 has a first outer surface 115, a second outer surface 116 and a third outer surface 117 arranged sequentially along a first direction X;

[0157] The diameter of the second outer surface 116 decreases sequentially along the first direction X, and in a cross section parallel to the first direction X, the angle between the second outer surface 116 and the first outer surface 115 is between 91° and 170°, and the angle between the second outer surface 116 and the third outer surface 117 is between 91° and 170°.

[0158] In this embodiment, by setting a second outer surface 116 with a diameter that gradually decreases along the first direction X, the outer diameter of the shell 11 gradually decreases along the first direction X, so that the first outer surface 115 smoothly transitions to the second outer surface 116, further increasing the smoothness of pushing.

[0159] In embodiments of the present invention, the included angle between the second outer surface 116 and the first outer surface 115 is between 150° and 170°.

[0160] In embodiments of the present invention, the included angle between the second outer surface 116 and the third outer surface 117 is between 150° and 170°.

[0161] In an embodiment of the present invention, in a cross section parallel to the first direction X, the length of the first outer surface 115 is between 2 mm and 3 mm, the length of the second outer surface 116 is between 2.5 mm and 3.5 mm, and the length of the third outer surface 117 is between 10 mm and 13 mm.

[0162] like Figure 2 , 10As shown in Figure 11, in an embodiment of the present invention, a portion of the first outer surface 115 is located outside the first inner surface 113, and another portion of the first outer surface 115, the second outer surface 116, and the third outer surface 117 are located outside the second inner surface 114. The passage 112 is used to connect the inner cavity 111 with the outside through the second outer surface 116 and the second inner surface 114.

[0163] In this embodiment, by setting the guide port 112 on the inclined second outer surface 116, the included angle between the medical wire and the housing 11 is reduced when the medical wire is conveyed, which further increases the smoothness when conveying the medical wire.

[0164] In embodiments of the present invention, the distance between the distal end of the tangent 131 and the distal end of the guide port 112 is between 2mm and 4mm. This embodiment reduces the distance the tangent 131 moves to the guide port 112, thereby reducing the length of the locking member 121 exposed in the housing 11 when the locking member 121 moves along the second direction Y to the guide port 112 to cut the medical suture under the action of external force, thus avoiding damage to human tissue caused by the exposed locking member 121 and improving the safety of the locking and cutting integrated device 10.

[0165] like Figure 2 As shown, in an embodiment of the present invention, the ratio of the diameter of the third outer surface 117 to the diameter of the first outer surface 115 is between 60% and 85%. This embodiment, by varying the diameter of the outer surface of the housing 11, causes the height of the first outer surface 115, the second outer surface 116, and the third outer surface 117 of the housing 11 to gradually decrease in the vertical direction along the first direction. This allows the housing 11 to adapt to smaller bending radii, further increasing the smoothness of the push.

[0166] In embodiments of the present invention, the diameter of the first outer surface 115 is between 4 mm and 6 mm.

[0167] In embodiments of the present invention, the diameter of the third outer surface 117 is between 2.7 mm and 4.7 mm.

[0168] like Figure 1-24 As shown, this embodiment also provides a medical suture hooking device 40, which is used in conjunction with the medical suture locking and cutting integrated device described in any of the above embodiments. The hooking device 40 includes a hooking member 41 and a control member 42. The hooking member 41 passes through the guide port 112 and the fixing member 122 and protrudes from the far end of the housing 1. The portion of the hooking member 41 protruding from the far end of the housing 1 forms a hooking structure 411. The hooking member 41 is configured to be driven by the control member 42 so that the medical suture is driven from the fixing member 122 into the inner cavity 111 and protrudes through the guide port 112 via the hooking structure 411.

[0169] In this embodiment, the suture hooking device 40 drives the medical suture from the suture fixing member 122 into the inner cavity 111 and out through the guide port 112, so that the time and effort of threading the medical suture is not required during the operation. This realizes the rapid passing of the medical suture through the suture fixing member 122 and the guide port 112, reduces the operation time, improves the overall efficiency of the operation, and the suture hooking device has high precision and high reliability in driving the medical suture.

[0170] like Figure 4-24 As shown, in an embodiment of the present invention, the hook member 41 is linear, with one end of the hook member 41 disposed on the control member 42 and the other end passing through the guide port 112 and the fixing member 122 in sequence before protruding from the far end of the housing 1. It rotates at the far end of the housing 1 to form a ring structure, which constitutes the hook structure 411, and passes through the fixing member 122 and the guide port 112 in sequence before being disposed on the control member 42.

[0171] During the procedure, one end of the medical suture is passed through the hook structure 411, and then an external force is applied to the control component 42. The control component 42 drives the hook component 41 and the medical suture to move, so that the medical suture passes through the fixing component 122 and the guide port 112 in a folded state. Then, the locking and cutting process of the medical suture is completed by the locking and cutting integrated device 10.

[0172] In an embodiment of the present invention, the hook element 41 is made of metal wire.

[0173] like Figure 18-19 As shown in the embodiment of the present invention, the hooking device further includes a limiting member 43, which is provided with a limiting groove 431. The limiting member 43 is used to contact the hooking structure 411 through the limiting groove 431 to limit the displacement of the hooking structure 411.

[0174] The cross-sectional area of ​​the limiting member 43 is larger than that of the fixing member 122, so that the limiting member 43 cannot extend into the fixing member 122.

[0175] Among them, the limiting component 43 is made of silicone, but is not limited to this.

[0176] This embodiment uses a limiting member 43 to restrict the displacement of the hook structure 411, preventing misoperation of the control member 42 from causing the hook member 41 to retract from the fixing member 122 and the through port 112, thus preventing the pre-installation failure of the hook member 41. This embodiment improves the reliability of the hook device for medical threads.

[0177] like Figure 18-19 As shown, in an embodiment of the present invention, a limiting groove 431 is formed on the side wall of the limiting member 43, and the hook structure 411 enters the limiting groove 431 through the side wall of the limiting member 43 and engages with the limiting groove 431.

[0178] In embodiments of the present invention, the cross-section of the limiting groove 431 is a combination of two or more straight lines, broken lines, and wavy lines. This embodiment increases the roughness from inside to outside the limiting groove 431 to increase the difficulty of the hook structure 411 moving from inside to outside the limiting groove 431, preventing the hook structure 411 from detaching from the limiting groove 431, and further improving the reliability of the hook device for medical threads.

[0179] In an embodiment of the present invention, the cross-section of the limiting groove 431 is a combination of straight lines and broken lines.

[0180] like Figure 19 As shown, in an embodiment of the present invention, the limiting groove 431 includes a first limiting groove 4311 and a second limiting groove 4312, and the first limiting groove 4311 communicates with the outside through the second limiting groove 4312.

[0181] When the cross-section of the first limiting groove 4311 is circular, the diameter of the cross-section of the first limiting groove 4311 is greater than the width of the second limiting groove 4312.

[0182] When the cross-section of the first limiting groove 4311 is polygonal, the distance between the two opposite and non-adjacent sidewalls of the first limiting groove 4311 is greater than the width of the second limiting groove 4312.

[0183] This embodiment sets up a first limiting groove 4311 and a second limiting groove 4312, and places the hook structure 411 in the first limiting groove 4311 to increase the difficulty of the hook structure 411 moving from inside the limiting groove 431 to outside the limiting groove 431, thereby preventing the hook structure 411 from detaching from the limiting groove 431 and further improving the reliability of the hook device for medical threads.

[0184] The first limiting groove 4311 is located at the center of the limiting member 43.

[0185] The cross-section of the second limiting groove 4312 is a combination of two or more types of straight lines, broken lines, and wavy lines.

[0186] like Figure 20 As shown, in an embodiment of the present invention, a snap-fit ​​groove 421 is provided on the side wall of the control member 42, and the snap-fit ​​groove 421 extends along the first direction X and penetrates the control member 42. The control member 42 is fixed to the support through the snap-fit ​​groove 421. For example, the control member 42 is fixed to the connector 21 of the medical wire locking and cutting integration system through the snap-fit ​​groove 421.

[0187] This embodiment provides a snap-fit ​​groove 421 on the control component 42 that is compatible with the connector 21, allowing the control component 42 to be assembled onto the connector 21. This prevents accidental operation of the control component 42 from causing the hook component 41 to retract from the fixing component 122 and the through-hole 112, thus avoiding pre-assembly failure of the hook component 41. This embodiment improves the reliability of the hook-fitting device for medical threads. Furthermore, the snap-fit ​​groove 421 is located on the side wall of the control component 42 and extends through the control component 42 along the first direction X, making the installation and disassembly of the control component 42 and the connector 21 easy.

[0188] like Figure 20 As shown, in an embodiment of the present invention, an elastic element 4211 is provided in the snap-fit ​​groove 421, and when the control element 42 and the connector 21 are detachably connected, the elastic element 4211 is located on both sides of the connector 21 and clamps the connector 21, so that the connection between the control element 42 and the connector 21 is stable.

[0189] In an embodiment of the present invention, elastic members 4211 are provided on both opposite sidewalls of the snap-fit ​​groove 421, and the distance between the two elastic members 4211 is less than the width of the connector 21 or the diameter of the connector 21, so that when the control member 42 is detachably connected to the connector 21, the elastic members 4211 are located on both sides of the connector 21 and clamp the connector 21.

[0190] Among them, the elastic element 4211 is a silicone element, but it is not limited to this.

[0191] like Figure 20-23 As shown, in an embodiment of the present invention, the control member 42 includes a sub-control member 1 423 and a sub-control member 2 424 connected to each other. A first notch 4231 is formed on the side of the sub-control member 1 423 near the side of the sub-control member 2 424, and a second notch 4241 is formed on the side of the sub-control member 2 424 near the side of the sub-control member 1 423. A snap-fit ​​groove 421 is formed between the first notch 4231 and the second notch 4241.

[0192] In an embodiment of the present invention, the first notch 4231 is recessed inward to form a first receiving cavity 4232, and the second notch 4241 is recessed inward to form a second receiving cavity 4242. Both the first receiving cavity 4232 and the second receiving cavity 4242 contain elastic members 4211, so that when the control member 42 and the connector 21 are detachably connected, the elastic members 4211 are located on both sides of the connector 21 and clamp the connector 21.

[0193] like Figure 21-24 As shown in the embodiment of the present invention, a fixing member 422 is provided inside the control member 42, and both ends of the hook member 41 are fixed on the fixing member 422.

[0194] In an embodiment of the present invention, the fastener 422 is a clip, but is not limited thereto.

[0195] In an embodiment of the present invention, a protrusion 4233 is formed on the side of sub-controller 1 423 near sub-controller 2 424, and a mounting groove 4243 is formed on the side of sub-controller 2 424 near sub-controller 1 423. The mounting groove 4243 is used to accommodate the fixing member 422. When sub-controller 1 423 and sub-controller 2 424 are connected, the protrusion 4233 is located in the mounting groove 4243 to fix the fixing member 422 in the mounting groove 4243.

[0196] In an embodiment of the present invention, an anti-slip structure is provided on the outer surface of the control member 42 to increase the friction between the hand and the outer surface of the control member 42.

[0197] like Figure 1-24 As shown, this embodiment also provides a medical suture locking and cutting integration system, including an operating device 30, a connecting component 20, a medical suture locking and cutting integration device 10 as described in any of the above embodiments, and a medical suture hooking device 40 as described in any of the above embodiments;

[0198] Connection component 20 includes:

[0199] Connector 21, the distal end of connector 21 is connected to the housing 1 of locking and cutting integrated device 10, and the proximal end of connector 21 is connected to operating device 30;

[0200] The transmission component 22 is disposed within the connecting component 21. The distal end of the transmission component 22 extends into the housing 1 and is connected to the locking component 121 and / or the tangent component 131. The proximal end of the transmission component 22 is connected to the operating device 30. The transmission component 22 is used to drive the locking component 121 and / or the tangent component 131 to move under the action of the operating device 30.

[0201] The medical suture locking and cutting integrated system provided in this embodiment integrates a suture locking component 12, a suture cutting component 13, and a suture hooking device. Its rich functionality eliminates the need for extensive time and effort in threading the suture during surgery, improving overall surgical efficiency. Furthermore, the hooking device provides high precision and reliability in moving the suture. Simultaneously, it automates the suture locking and cutting process, facilitating operation by the surgeon and reducing manual intervention and instrument changes, thereby improving surgical efficiency.

[0202] In an embodiment of the present invention, the tangent 131 is disposed on the locking member 121, and the distal end of the transmission member 22 extends into the housing 1 and is connected to the locking member 121. The transmission member 22 is used to drive the locking member 121 and the tangent 131 to move synchronously under the action of the operating device 30.

[0203] In an embodiment of the present invention, the transmission member 22 includes a first sub-transmission member and a second sub-transmission member. The distal end of the first sub-transmission member extends into the housing 1 and is connected to the locking member 121, and the proximal end of the first sub-transmission member is connected to the operating device 30. The first sub-transmission member is used to drive the locking member 121 to move under the action of the operating device 30. The distal end of the second sub-transmission member extends into the housing 1 and is connected to the tangent member 131, and the proximal end of the second sub-transmission member is connected to the operating device 30. The second sub-transmission member is used to drive the tangent member 131 to move under the action of the operating device 30.

[0204] Note that the above description is merely a preferred embodiment and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this application, and the scope of this application is determined by the scope of the appended claims.

[0205] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lock and cut integrated device for medical suture, characterized in that, The utility model relates to a medical line locking and cutting device, comprising: a shell which is formed with an inner cavity, the shell being provided with a through opening which communicates with the inner cavity, the inner cavity having a first inner surface and a second inner surface which are arranged in sequence along a first direction, the first direction being a direction from a distal end of the shell to a proximal end of the shell, the first inner surface being arranged obliquely relative to the second inner surface so that a distal end of the inner cavity is in an open state; a locking wire assembly which comprises a locking member and a wire fixing member, the locking member being located in the shell, the locking member being provided with a locking tooth and a locking groove, the wire fixing member being located between the locking tooth and the locking groove, the wire fixing member being used for allowing a medical line to pass through, the medical line entering the inner cavity through the wire fixing member and extending out through the through opening, the locking member being used for being connected with an external driving member so as to move along the first direction under the action of the external driving member, so that the locking tooth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed and the medical line is locked; wherein, in a cross section parallel to the first direction, a contact position of the locking tooth and the wire fixing member is located at any position from a middle part of the wire fixing member to a position close to a proximal end of the wire fixing member; a wire cutting assembly which comprises a wire cutting member, the wire cutting member being located in the shell, the wire cutting member being arranged on the locking member and being used for moving synchronously with the locking member along a second direction to the through opening under the action of the external driving member, so as to cut the medical line; wherein, the second direction is a reverse direction of the first direction; wherein, the locking member comprises a base and two locking arms which are arranged at intervals and extend outward from the base, the locking arms being formed with a stress receiving part, a reinforcing part and an elastic part in sequence along the first direction, and being connected with the base through the elastic part; the stress receiving part of one of the locking arms is provided with the locking tooth, and the stress receiving part of the other locking arm is provided with the locking groove; the stress receiving part is in contact with the first inner surface, and the reinforcing part is in contact with the second inner surface; in the cross section parallel to the first direction, a height of the reinforcing part is greater than a height of the elastic part.

2. The lock cut integrated device of medical thread according to claim 1, characterized in that, the locking member is used for moving along the first direction under the action of an external force, so that the locking tooth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed to be in a V-like shape and the medical line is locked; and / or, in a cross section parallel to the first direction, the locking tooth forms an included angle a between the two side walls, and 0°≤a≤90°, the end of the locking tooth close to the end of the cord holder has a curvature K1, and 8mm -1 ≤K1≤12mm -1 ; the locking groove forms an included angle b between the two side walls, and 0°≤b≤90°, the end of the locking groove away from the end of the cord holder has a curvature K2, and 2mm -1 ≤K2≤3mm -1 .

3. The lock cut integrated device of medical thread according to claim 2, characterized in that, in the cross section parallel to the first direction, an end part of the locking tooth which is close to one end of the wire fixing member is arranged correspondingly to an end part of the locking groove which is away from the other end of the wire fixing member, the end part of the locking tooth which is close to one end of the wire fixing member is a first circular arc, and an arc number of the first circular arc is θ1; the end part of the locking groove which is away from the other end of the wire fixing member is a second circular arc, and an arc number of the second circular arc is θ2; wherein, θ1=θ2.

4. The lock cut integrated device of medical thread according to claim 3, characterized in that, in the cross section parallel to the first direction, two side walls of the locking tooth are arranged correspondingly to two side walls of the locking groove, and α=β. When the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, the locking teeth and the locking groove deform the wire fixing part and lock the medical line, an end of the locking teeth close to one end of the wire fixing part and an end of the locking groove away from the other end of the wire fixing part form a first distance L1, a side wall of the corresponding locking teeth and a side wall of the corresponding locking groove form a second distance L2, and another side wall of the corresponding locking teeth and another side wall of the corresponding locking groove form a third distance L3. L1 = L2 = L3.

5. The lock cut integrated device of medical thread according to claim 1, characterized in that, In a cross section parallel to the first direction, the ratio of the distance between the contact of the locking teeth with the wire fixing part and the distal end of the wire fixing part to the length of the wire fixing part is between 50% and 90%. In a cross section parallel to the first direction, the ratio of the length of the slot of the locking groove to the length of the wire fixing part is between 40% and 90%.

6. The lock cut integrated device of medical thread according to claim 1, characterized in that, The locking part comprises a base and a first locking arm and a second locking arm extending outwardly from the base, the first locking arm is formed with the locking teeth on one side close to the second locking arm, and the second locking arm is formed with the locking groove on one side close to the first locking arm. The distal end of the first locking arm is formed with a notch to form a gap between the distal end of the first locking arm and the distal end of the second locking arm, and in a cross section parallel to the first direction, when the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, the wire fixing part is deformed and the medical line is locked, the length of the gap is between 0.5mm and 2mm, and the height of the gap is between 0.5mm and 2mm.

7. The lock cut integrated device of medical line according to claim 1, wherein, The shell has a first outer surface, a second outer surface and a third outer surface arranged in sequence along a first direction; The diameter of the second outer surface decreases in sequence along the first direction, and in a cross section parallel to the first direction, the included angle between the second outer surface and the first outer surface is between 91° and 170°, and the included angle between the second outer surface and the third outer surface is between 91° and 170°; and / or, the ratio of the diameter of the third outer surface to the diameter of the first outer surface is between 60% and 85%.

8. The lock cut integrated device of medical thread according to claim 7, characterized in that, Part of the first outer surface is located outside the first inner surface, and the other part of the first outer surface, the second outer surface and the third outer surface are located outside the second inner surface, and the through hole is used to communicate the inner cavity with the outside through the second outer surface and the second inner surface.

9. The lock cut integrated device of medical thread according to claim 6, characterized in that, The distal end of the wire fixing part extends outwardly to form a boss, and in a cross section parallel to the first direction, when the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, the wire fixing part is deformed and the medical line is locked, the outer diameter of the boss is greater than the height of the gap.

10. The lock cut integrated device of medical thread according to claim 9, characterized in that, The tangent piece is arranged on the locking piece and arranged around the periphery of the locking piece, and the locking piece is used to drive the tangent piece to move synchronously under the action of an external force; wherein the length ratio of the tangent piece to the locking piece is between 40%-70%.

11. The lock cut integrated device of medical thread according to claim 1, characterized in that, The distal end of the shell has a rounded corner structure; And / or, the proximal end of the tangent piece has a rounded corner structure; And / or, the inner surface of the fixed wire piece is provided with one of a threaded protrusion, a threaded groove, a plurality of spaced protrusions, and a plurality of spaced grooves, so that the inner surface of the fixed wire piece forms a concave-convex structure; And / or, in a plane parallel to the first direction, the projection pattern of the locking piece completely overlaps the projection pattern of the shell, so that the locking piece is completely located in the shell; And / or, the included angle between the first inner surface and the second inner surface is between 130°-170°; And / or, the distance between the distal end of the tangent piece and the distal end of the guide opening is between 2mm-4mm.

12. A thread hooking device for medical thread, characterized by The hooking device is used in cooperation with the lock and cut integrated device of the medical wire of any one of claims 1-11, and the hooking device comprises a hooking piece and a control piece; The hooking piece passes through the guide opening of the lock and cut integrated device of the medical wire and the fixed wire piece of the lock and cut integrated device of the medical wire and exposes the distal end of the shell of the lock and cut integrated device of the medical wire, and the part of the hooking piece exposed from the distal end of the shell forms a hooking structure, and the hooking piece is configured to be driven by the control piece to drive the medical wire into the inner cavity of the lock and cut integrated device of the medical wire from the fixed wire piece through the guide opening.

13. The thread retrieval device of claim 12, wherein the thread retrieval device is configured to be inserted into a patient's body. The side wall of the control piece is provided with a clamping groove, and the clamping groove extends along the first direction and penetrates through the control piece; And / or, the hooking device further comprises a limiting piece, the limiting piece is provided with a limiting groove, the limiting piece is used to limit the displacement of the hooking structure by contacting the hooking structure through the limiting groove; wherein the cross section of the limiting groove is a combination of two or more of a straight line, a broken line and a wavy line.

14. A lock cut integrated system of a medical thread, characterized in that, The operation device, the connecting assembly, the lock and cut integrated device of the medical wire of any one of claims 1-11, and the hooking device of the medical wire of claim 12 or 13 are included. The connecting assembly comprises: A connecting piece, the distal end of the connecting piece is connected with the shell of the lock and cut integrated device, and the proximal end of the connecting piece is connected with the operation device; A transmission piece, the transmission piece is arranged in the connecting piece, the distal end of the transmission piece extends into the shell and is connected with the locking piece, the proximal end of the transmission piece is connected with the operation device, and the transmission piece is used to drive the locking piece and the tangent piece to move synchronously under the action of the operation device.

Images