Suturing device

Abstract

The application is suitable for the field of medical devices and provides a suturing device, which comprises at least two opening angle control assemblies, the opening angle control assemblies are connected with a handle, a suture fastening member and a tubular member respectively, the handle is used to drive the opening angle control assemblies to move along the axial direction, and the opening angle control assemblies are used to drive the suture fastening member to stretch out from the tubular member towards the radial outside while increasing the opening angle of the suture fastening member and a puncture needle. The opening angle control assemblies can drive the suture fastening member to move towards the radial outside while increasing the opening angle of the puncture needle and the tubular member, so that the puncture needle and the suture fastening member are fastened.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, and particularly relates to a suturing device. Background Technology

[0002] In interventional therapy, openings need to be made in human tissues and blood vessels to allow guidewires, delivery devices, etc., to enter the vascular system. However, blood vessels are located inside the subcutaneous tissue, and it is difficult to surgically suture the blood vessels after the interventional devices have been delivered. Therefore, suturing the blood vessel openings with a suture device is usually used to close the blood vessel openings.

[0003] In existing technologies, the position of the suture needle is fixed. When encountering a large blood vessel opening, multiple suture needles are needed to suture different positions of the blood vessel opening, resulting in poor adaptability and cumbersome operation steps, which makes it inconvenient for clinical application. Summary of the Invention

[0004] The purpose of this invention is to provide a suturing device that addresses the technical problem of poor adaptability of existing suturing devices to blood vessel sizes.

[0005] The present invention is implemented as follows: It provides a device including a handle; a tubular member connected to the handle; at least one pair of suture fasteners; at least one pair of puncture needles corresponding to the suture fasteners, the suture fasteners and the puncture needles being inserted into the tubular member; and at least two angle control components, each connected to the handle, the suture fasteners, and the tubular member respectively. The handle is used to drive the angle control components to move axially, and the angle control components are used to increase the angle between the suture fasteners and the puncture needles while simultaneously causing the suture fasteners to extend radially outward from the tubular member, or to decrease the angle between the suture fasteners and the puncture needles while simultaneously causing the suture fasteners to retract from the outside of the tubular member into the tubular member.

[0006] Optionally, the angle control assembly includes a pusher, a first connecting rod, a guide needle, and a second connecting rod. The proximal end of the pusher is connected to the handle, and the distal end of the pusher is rotatably connected to the first connecting rod. The first connecting rod is rotatably connected to the guide needle, and the guide needle is rotatably connected to the tubular component. The two ends of the second connecting rod are rotatably connected to the guide needle and the suture fastener, respectively. The puncture needle is inserted into the guide needle. The pusher is used to drive the first connecting rod to move, the first connecting rod is used to drive the guide needle and the second connecting rod to move, and the second connecting rod is used to drive the suture fastener to move.

[0007] Optionally, the guide needle component has a guide needle hole, the axis of which passes through the position where the suture fastener connects to the puncture needle.

[0008] Optionally, the suturing device further includes a guide member disposed inside the tubular member. The distal end of the guide member has a plurality of guide grooves. The guide grooves are bent from near the center of the tubular member toward the outside of the tubular member, and the suture fastener passes through the guide grooves.

[0009] Optionally, the guide member has a beveled structure at its proximal end, and the tubular member has a guide wire through hole on its side wall, with the beveled structure facing the guide wire through hole.

[0010] Optionally, the suture fastener includes a first fastener, and the puncture needle includes a second fastener, with the first fastener and the second fastener engaging in a snap-fit ​​connection.

[0011] Optionally, the suture fastener further includes a first suture, one end of which is connected to the first fastener, and the other end of which is connected to the first fastener on another corresponding suture fastener. The puncture needle includes a second suture, which is connected to the second fastener, and also includes a knot, which is at least sleeved on two second sutures connected to the same first suture.

[0012] Optionally, the suturing device further includes a limiting member, which is inserted into the tubular member. The limiting member has multiple limiting holes, which are arranged along the axial direction of the tubular member. The pusher and the puncture needle are respectively inserted into the corresponding limiting holes.

[0013] Optionally, the tubular component further includes a multi-lumen tube located on the proximal side of the suture fastener. The multi-lumen tube includes a first cavity, a second cavity, and a third cavity arranged axially. The angle control component passes through the first cavity and is connected to the handle. The puncture needle passes through the second cavity and is connected to the handle. The third cavity communicates with the handle.

[0014] Optionally, the angle control assembly includes a first elastic rod, a second elastic rod, and a third elastic rod. The proximal end of the first elastic rod is connected to the handle, and the distal end of the first elastic rod is connected to the second and third elastic rods. The second and third elastic rods are arranged at a predetermined angle. The distal end of the second elastic rod abuts against the tubular member, and the distal end of the third elastic rod is connected to the suture fastener. The puncture needle is movably connected to the second elastic rod.

[0015] The suturing device provided by the present invention is connected to the handle, the suture fastener, and the puncture needle respectively through an angle control component. This allows the angle control component to increase the angle between the puncture needle and the tubular component while moving the suture fastener radially outward, or to decrease the angle between the puncture needle and the tubular component while moving the suture fastener radially inward. This adapts to vascular wounds of different opening sizes. At the same time, it also ensures that the end of the puncture needle away from the center of the tubular component always faces the end of the suture fastener away from the center of the tubular component, guaranteeing that the puncture needle and the suture fastener are properly engaged. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the vascular suture device in Embodiment 1 of the present invention;

[0017] Figure 2 This is a schematic diagram of the mating structure of the fastener, puncture needle, and tubular component in Embodiment 1 of the present invention;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the vascular suture device in Embodiment 1 of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the vascular suture device after the tubular part is removed in Embodiment 1 of the present invention;

[0020] Figure 5 This is a schematic diagram of the angle control component in Embodiment 1 of the present invention;

[0021] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point A in the diagram;

[0022] Figure 7 This is a schematic diagram of the tubular component in Embodiment 1 of the present invention;

[0023] Figure 8 yes Figure 3 Enlarged schematic diagram of the structure at point B in the diagram;

[0024] Figure 9 This is a schematic diagram of the cooperation between the suture and the puncture needle in Embodiment 1 of the present invention;

[0025] Figure 10 This is a schematic diagram of the multi-lumen tube structure in Embodiment 1 of the present invention;

[0026] Figure 11 This is a schematic diagram of the handle structure in Embodiment 1 of the present invention;

[0027] Figure 12 This is a schematic diagram of the angle control component in Embodiment 2 of the present invention;

[0028] Figure 13 This is a schematic diagram of the movement process of the angle control key assembly in Embodiment 2 of the present invention;

[0029] Figure 14 This is a schematic diagram of the suture fastener unfolding inside a blood vessel in Embodiment 2 of the present invention;

[0030] Figure 15 This is a schematic diagram of the structure of the suture fastener abutting against the inner wall of the blood vessel in Embodiment 2 of the present invention;

[0031] Figure 16 This is a schematic diagram of the fastening of the puncture needle and the suture fastener in Embodiment 2 of the present invention;

[0032] Figure 17 This is a schematic diagram of the suture thread being used to suture a blood vessel in Embodiment 2 of the present invention;

[0033] Figure 18 This is a schematic diagram of the structure in Embodiment 2 of the present invention, in which the suture is tied with a knot.

[0034] Reference numerals: 100-Suturing device; 110-Handle; 111-Housing; 1111-Through hole; 1112-Protruding tooth; 1113-Slide groove; 1114-Spring; 112-First control element; 113-Second control element; 120-Tube-shaped component; 121-Allowing hole; 122-Guide wire through hole; 123-Multi-lumen tube; 1231-First cavity; 1232-Second cavity; 1233-Third cavity; 130-Suture fastener; 131-Fastening assembly body; 132-First fastener; 1321-Slot; 133-First suture; 134-First suture fastener; 135-Second suture fastener; 140-Punch needle; 141-Second fastening element; 1411-Elastic protrusion; 142-Second suture; 1421-First suture segment; 1422-Second suture segment; 143-First puncture needle; 144-Second puncture needle; 150-Angle control assembly; 151-Pushing element; 152-First connecting rod; 153-Guide needle element; 1531-Guide needle hole; 154-Second connecting rod; 155-First elastic rod; 156-Second elastic rod; 1561-Guide part; 157-Third elastic rod; 160-Guide element; 161-Guide groove; 162-Sloping structure; 163-Thread groove; 170-Limiting element; 180-Thread knot; Blood vessel-210; Opening-220. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0037] It should also be noted that the directional terms such as left, right, up, and down in this embodiment are only relative concepts or are based on the normal use of the product, and should not be considered as restrictive.

[0038] In the field of interventional medicine, the end closer to the operator is usually defined as the "proximal end" and the end farther from the operator is defined as the "distal end". For long objects, the direction parallel to their length is defined as the "axial direction". For objects with a circular cross-section, the direction around their axis is defined as the "circumferential direction" and the line along the circumferential direction is defined as the "circumferential line".

[0039] Example 1

[0040] Reference Figures 1 to 3 As shown, an embodiment of the present invention provides a suturing device 100, comprising: a handle 110; a tubular member 120 connected to the handle 110; at least one pair of suture fasteners 130; at least one pair of puncture needles 140 corresponding to the suture fasteners 130, wherein the suture fasteners 130 and the puncture needles 140 are inserted into the tubular member 120; and at least two angle control components 150, wherein the angle control components 150 are respectively connected to the handle 110, the suture fasteners 130, and the tubular member. The handle 110 is used to drive the angle control component 150 to move axially. The angle control component 150 is used to increase the angle between the suture fastener 130 and the puncture needle 140 while driving the suture fastener 130 to extend radially outward from the tubular member 120, or to decrease the angle between the suture fastener 130 and the puncture needle 140 while driving the suture fastener 130 to retract from the outside of the tubular member 120 into the tubular member 120.

[0041] In this embodiment, the suturing device 100 is used to suture wounds on blood vessels formed by the delivery of interventional instruments. The suturing device 100 is used to pass the two ends of the suture thread through the blood vessel walls on opposite sides of the blood vessel opening and connect the two ends of the suture thread to form a suture loop. The suture loop is pre-set with a suture knot for tightening the suture loop. The suture knot is used to tighten the suture loop to the wound on the blood vessel and to tighten the tissues on opposite sides of the wound so as to close the blood vessel wound.

[0042] The distal end of the handle 110 is connected to the tubular member 120, and the proximal end of the handle 110 is provided with a puncture needle control component. The puncture needle control component passes through the handle 110 and the tubular member 120 and is connected to the puncture needle 140. The puncture needle control component is used to control the movement of the puncture needle 140 within the tubular member 120. The handle 110 is also provided with an angle control component. The angle control component passes through the handle 110 and the tubular member 120 and is connected to the angle control assembly 150. The angle control component is used to drive the angle control assembly 150 to move within the tubular member 120.

[0043] The suture fastener 130 is inserted inside the tubular member 120 and is connected to the angle control component 150. Under the control of the angle control component 150, the suture fastener 130 can extend or retract radially along the tubular member 120. The end of the suture fastener 130 away from the center of the tubular member 120 is provided with a fastening structure that cooperates with the puncture needle 140. The fastening structure can be disengaged from the suture fastener 130. The end of the fastening structure near the center of the tubular member 120 is connected to one end of the suture. The puncture needle 140 is fastened to the fastening structure, and the end of the puncture needle 140 near the center of the tubular member 120 is connected to the suture.

[0044] In this embodiment, at least two angle control components 150 are provided. The two angle control components 150 are radially symmetrically arranged on the inner side of the tubular member 120. The angle control components 150 are rotatably connected to the suture fastener 130. The angle control components 150 are used to push the suture fastener 130 to move radially outward. The angle control components 150 are also movably connected to the puncture needle 140. The angle control components 150 are used to adjust the angle between the puncture needle 140 and the axis of the tubular member 120. During the process of adjusting the distance of the suture fastener 130 extending outward from the tubular member, when it is necessary to increase the suturing range of the puncture needle 140 and the suture fastener 130, the suture fastener 130 can be moved radially outward by the angle control component 150. At the same time, the angle control component 150 drives the puncture needle 140 to rotate, adjusting the angle of the puncture needle 140 (the angle refers to the angle between the axis of the puncture needle 140 and the axis of the tubular member 120), so that the angle of the puncture needle 140 increases, so that the axis of the puncture needle 140 passes through the end of the suture fastener 130 away from the center of the tubular member 120. When it is necessary to reduce the suturing range of the puncture needle 140 and the suture fastener 130, the angle control component 150 can be used to drive the suture fastener 130 to move radially inward. At the same time, the angle control component 150 also drives the puncture needle 140 to rotate, adjusting the angle of the puncture needle 140 so that the angle of the puncture needle 140 is reduced, so that the puncture needle 140 passes through the end of the suture fastener 130 near the center of the tubular structure.

[0045] The angle control component 150 is connected to the handle 110, the suture fastener 130, and the puncture needle 140 respectively. This allows the angle control component 150 to increase the angle between the puncture needle 140 and the tubular member 120 while moving the suture fastener 130 radially outward, or to decrease the angle between the puncture needle 140 and the tubular member 120 while moving the suture fastener 130 radially inward. This allows the suture device to adapt to vascular wounds of different sizes. At the same time, it also ensures that the end of the puncture needle 140 away from the center of the tubular member 120 is always aligned with the end of the suture fastener 130 away from the center of the tubular member 120, guaranteeing that the puncture needle 140 is engaged with the suture fastener 130 while adjusting the suture fastener 130 to extend beyond the tubular member 120.

[0046] Reference Figures 3 to 5 As shown, the angle control assembly 150 includes a pusher 151, a first connecting rod 152, a guide needle 153, and a second connecting rod 154. The proximal end of the pusher 151 is connected to the handle 110, and the distal end of the pusher 151 is rotatably connected to the first connecting rod 152. The first connecting rod 152 is rotatably connected to the guide needle 153, and the guide needle 153 is rotatably connected to the tubular component 120. The two ends of the second connecting rod 154 are rotatably connected to the guide needle 153 and the suture fastener 130, respectively. The puncture needle 140 passes through the guide needle 153. The pusher 151 is used to drive the first connecting rod 152 to move, the first connecting rod 152 is used to drive the guide needle 153 and the second connecting rod 154 to move, and the second connecting rod 154 is used to drive the suture fastener 130 to move.

[0047] The pusher 151 is inserted into the tubular member 120. One end of the pusher 151 is connected to the handle 110, and the other end is rotatably connected to the first connecting rod 152. The two ends of the first connecting rod 152 are rotatably connected to the guide needle 153 and the pusher 151, respectively. The guide needle 153 is rotatably connected to the tubular member 120, and the puncture needle 140 is movably connected to the guide needle 153. Specifically, the guide needle 153 has a guide needle hole 1531, and the puncture needle 140 is inserted into the guide needle hole 1531, allowing the puncture needle 140 to move along the direction guided by the guide needle 153. One end of the second connecting rod 154 is rotatably connected to the guide needle 153, and the other end of the second connecting rod 154 is rotatably connected to the suture fastener 130. The tubular member 120 is provided with a guide hole (not shown in the figure) for the suture fastener 130 to pass through. The inner wall of the guide hole abuts against the side wall of the suture fastener 130, and the suture fastener 130 can pass through the guide hole to the outside of the tubular member 120.

[0048] During the actual operation of the angle control component, when it is necessary to increase the suture spacing, the pusher 151 is pushed towards the distal end. The pusher 151 drives the first connecting rod 152 to rotate relative to the guide needle 153. The first connecting rod 152 drives one end of the guide needle 153 to move towards the center of the tubular component 120. The guide needle 153 rotates relative to the tubular component 120, and the angle between the guide needle 153 and the axis of the tubular component 120 increases (i.e., Figure 5 The guide needle 153 and the axis l1 of the tubular member 120 are at an angle b), the guide needle 153 is more inclined toward the radial outer side of the tubular member 120. At the same time, under the pushing action of the guide needle 153, the second connecting rod 154 rotates relative to the guide needle 153 and pushes the suture fastener 130 to move in the guide hole. Under the pushing action of the second connecting rod 154, the suture fastener 130 moves toward the radial outer side of the tubular member 120. When it is necessary to reduce the suture spacing, the pusher 151 is pulled towards the proximal end. The pusher 151 drives the first link 152 to retract. The first link 152 rotates relative to the guide needle 153 and drives one end of the guide needle 153 to rotate away from the center of the tubular member 120. The angle between the guide needle 153 and the axis of the tubular member 120 is reduced. At the same time, under the pushing action of the guide needle 153, the second link 154 rotates relative to the guide needle 153 and pushes the suture fastener 130 to move in the guide hole. Under the pushing action of the second link 154, the suture fastener 130 moves towards the center side of the tubular member 120.

[0049] The pusher 151 is rotatably connected to the first connecting rod 152. The two ends of the first connecting rod 152 are rotatably connected to the guide needle 153 and the pusher 151, respectively. The guide needle 153 is rotatably connected to the tubular member 120. The two ends of the second connecting rod 154 are rotatably connected to the guide needle 153 and the suture fastener 130, respectively. This allows the pusher to push the first connecting rod 152, and the first connecting rod 152 to simultaneously push the guide needle 153 and the second connecting rod 154. The second connecting rod 154 can then push the suture fastener 130, thereby... The pusher 151 can simultaneously control the angle between the guide needle 153 and the axis of the tubular member 120 and the length of the suture fastener 130 extending beyond the tubular member 120, so that the suturing device can adapt to vascular wounds of different opening sizes. On the other hand, it ensures that the guide needle direction of the guide needle 153 can always pass through the end of the suture fastener 130 away from the tubular member 120, ensuring that after adjusting the suture spacing of the suture fastener 130, the puncture needle 140 can engage with the suture fastener 130, ensuring the controllability of the adjustment of the suturing area of ​​the suture device.

[0050] Reference Figure 5 , Figure 6 As shown, the guide needle member 153 has a guide needle hole 1531, and the axis of the guide needle hole 1531 passes through the position where the suture fastener 130 is connected to the puncture needle 140.

[0051] A guide hole 1531 is provided through the guide needle member 153. The axis of the guide hole 1531 is inclined relative to the axis l1 of the tubular member 120, that is, the guide hole 1531 and the axis l1 of the tubular member 120 have a certain angle. The axis of the guide hole 1531 passes through the position where the suture fastener 130 connects to the puncture needle 140, such as... Figure 2 As shown, a clearance hole 121 is also provided on the side wall of the tubular component 120. The position of the clearance hole 121 corresponds to the position of the guide needle hole 1531. The axis of the guide needle hole 1531 passes through the clearance hole 121. The diameter of the clearance hole 121 is larger than the diameter of the guide needle hole 1531, or the clearance hole 121 is an elongated hole. During the rotation of the guide needle component 153, the clearance hole 121 can provide a certain amount of space for the position adjustment of the puncture needle 140.

[0052] The guide needle member 153 has a guide needle hole 1531. The axis of the guide needle hole 1531 passes through the position where the suture fastener 130 is connected to the puncture needle 140, so that the puncture needle 140 moves toward the suture fastener 130 under the guidance of the guide needle hole 1531, so as to facilitate the connection between the puncture needle 140 and the suture in the suture fastener 130, and ensure the accuracy of the connection between the puncture needle 140 and the suture in the suture fastener 130.

[0053] Reference Figures 2 to 4 As shown, the suturing device 100 also includes a guide 160, which is disposed inside the tubular member 120. The proximal end of the guide 160 is provided with a plurality of guide grooves 161 corresponding to the suture fasteners 130. The guide grooves 161 are bent from near the center of the tubular member 120 toward the outside of the tubular member 120. The suture fasteners 130 are at least partially inserted into the guide grooves 161.

[0054] The guide 160 is fixed inside the tubular member 120. The guide 160 can be fused, bonded, or connected to the inner wall of the tubular member 120 by fasteners. The guide 160 is located on the side of the suture fastener 130 near the distal end. Multiple guide grooves 161 are provided on the proximal end face of the guide 160. The guide grooves 161 are bent from the side near the center of the tubular member 120 toward the outside of the tubular member 120. The guide grooves 161 are generally arc-shaped. The suture fastener 130 is at least partially inserted into the guide grooves 161 and can slide within the guide grooves 161. During the process of the second link 154 pushing the suture fastener 130 toward the distal end, the end of the suture fastener 130 near the second link 154 moves toward the distal end of the tubular member 120. The suture fastener 130 has a certain elastic deformation property. The side wall of the suture fastener 130 abuts against the inner wall of the guide groove 161. Under the action of the abutment force of the guide groove 161, the suture fastener 130 undergoes bending deformation. At the same time, the end of the suture fastener 130 away from the second link 154 moves toward the radially outward side of the tubular member 120. During the process of the second link 154 pulling the suture fastener 130 toward the proximal end, the end of the suture fastener 130 near the second link 154 moves toward the proximal end of the tubular member 120. The suture fastener 130 retracts along the guiding direction of the guide groove 161, and the end of the suture fastener 130 away from the second link 154 moves toward the side closer to the center of the tubular member 120.

[0055] Multiple guide grooves 161, corresponding to the suture fasteners 130, are provided at the proximal end of the guide member 160. The guide grooves 161 bend from near the center of the tubular member 120 toward the outside of the tubular member 120, allowing the suture fasteners 130 to pass through the guide grooves 161 and slide within them. This allows the suture fasteners 130 to bend toward the radial outside of the tubular member 120, realizing the conversion of the suture fasteners 130 from axial to radial movement. This enables the adjustment of the distance between the two relatively arranged suture fasteners 130, making it easier for the suturing device 100 to adapt to vascular wounds of different opening sizes.

[0056] Reference Figure 4 As shown, the guide member 160 has a beveled structure 162 at its distal end, and the tubular member 120 has a guide wire through hole 122 on its side wall, with the beveled structure 162 facing the guide wire through hole 122.

[0057] The guide member 160 has a sloping structure 162 at its distal end. The sloping structure 162 is radially inclined relative to the tubular member 120 and faces the distal end of the tubular member 120. (Refer to...) Figure 7As shown, a guidewire through-hole 122 is provided on the side wall of the tubular component 120. The inclined surface of the inclined structure 162 is set facing the guidewire through-hole 122, which is used to guide the guidewire. In actual use, the guidewire first enters the blood vessel, providing a pre-supported path for the tubular component 120 to enter the blood vessel. The distal end of the tubular component 120 is fitted onto the guidewire and follows the guidewire into the blood vessel. The tubular component 120 moves towards the distal end until the guidewire abuts against the inclined structure 162. The inclined structure 162 blocks the guidewire from continuing to move towards the proximal end of the tubular component 120 and guides the guidewire to the guidewire through-hole 122 until the guidewire is exposed outside the guidewire through-hole 122. The operator then pulls the guidewire out from the guidewire through-hole 122 to realize the delivery of the tubular component 120, i.e., the removal of the guidewire.

[0058] A beveled structure 162 is provided at the proximal end of the guide member 160, and a guide wire through hole 122 is provided on the side wall of the tubular member 120. The beveled structure 162 is arranged facing the guide wire through hole 122, so that the beveled structure 162 can guide the guide wire to the outside of the guide wire through hole 122, which facilitates the removal of the guide wire.

[0059] Reference Figure 8 As shown, the suture fastener 130 includes a first fastener 132, and the puncture needle 140 includes a second fastener 141. The first fastener 132 and the second fastener 141 are engaged.

[0060] The suture fastener 130 includes a fastening assembly body 131 and a first fastening member 132. The fastening assembly body 131 passes through the guide groove 161. A receiving groove is formed at the end of the fastening assembly body 131 away from the tubular member 120. The first fastening member 132 is located within the receiving groove and faces the puncture needle 140. The first fastening member 132 has a first fastening portion, and the puncture needle 140 has a second fastening portion. The second fastening portion passes through the fastening assembly body 131 and engages with the first fastening portion. Specifically, the first fastening portion has a slot 1321, and the second fastening portion has an elastic protrusion 1411. The elastic protrusion 1411 is inserted into the slot 1321, and the elastic protrusion 1411 fits against the inner wall of the slot 1321 and has a certain elastic force. After the elastic protrusion 1411 passes through the opening of the slot 1321, it abuts against the slot 1321 under the elastic force, thereby achieving the snap-fit ​​engagement of the first fastening member 132 and the second fastening member 141. During the process of connecting the suture with the puncture needle 140 and the suture fastening member 130, the puncture needle 140 drives the suture towards the suture fastening member 130, and the first fastening member 132 and the second fastening member 141 snap together to connect the suture on the puncture needle 140 and the suture on the suture fastening member 130. Through the snap-fit ​​engagement of the first fastening member 132 and the second fastening member 141, the suture on the puncture needle 140 and the suture on the suture fastening member 130 are connected, thereby achieving the connection of the sutures on both sides of the wound. Of course, in some other embodiments, the slot 1321 can also be provided on the second fastening part, and the elastic protrusion 1411 can also be provided on the first fastening part.

[0061] Reference Figure 9 As shown, the suture fastener 130 also includes a first suture 133, one end of which is connected to the first fastener 132, and the other end of which is connected to the first fastener 132 on another corresponding suture fastener 130. The puncture needle 140 includes a second suture 142, which is connected to the second fastener 141, and also includes a knot, which is at least sleeved on two second sutures 142 connected to the same first suture 133.

[0062] In this embodiment, the suturing device 100 includes a pair of suture fasteners 130 and a pair of puncture needles 140 corresponding to the suture fasteners 130. The pair of suture fasteners 130 includes a first suture fastener 134 and a second suture fastener 135. One end of the first suture 133 is connected to the first fastener 132 on the first suture fastener 134, and the other end of the first suture 133 is connected to the first fastener 132 on the second suture fastener 135. The pair of puncture needles 140 are packaged together. The device includes a first puncture needle 143 and a second puncture needle 144. The first puncture needle 143 is correspondingly disposed with a first suture fastener 134, and the second puncture needle 144 is correspondingly disposed with a second suture fastener 135. The first puncture needle 143 includes a first suture segment 1421, which is connected to the second fastener 141 on the first puncture needle 143. The second puncture needle 144 includes a second suture segment 1422, which is connected to the second fastener 141 on the second puncture needle 144. The second fastener 141 on the first puncture needle 143 is connected to the first fastener 132 on the first suture fastener 134 to connect the first suture segment 1421 to the first suture 133. The second fastener 141 on the second puncture needle 144 is connected to the first fastener 132 on the second suture fastener 135 to connect the second suture segment 1422 to the first suture 133. A knot (not shown in the figure) is fitted onto the first suture segment 1421 and the second suture segment 1422, and the knot can slide on the surface of the first suture segment 1421 and the second suture segment 1422.

[0063] During the suturing of the vascular wound, the first suture fastener 134 is fitted against the inner wall of the blood vessel on one side of the wound, and the second suture fastener 135 is fitted against the inner wall of the blood vessel on the other side of the wound. The first puncture needle 143 passes through the side wall of the tubular member 120, passes through the outer wall of the blood vessel, and connects with the first fastener 132 on the first suture fastener 134. The second puncture needle 144 passes through the side wall of the tubular member 120, passes through the outer wall of the blood vessel, and connects with the first fastener 132 on the second suture fastener 135. The first suture fastener 134 and the second suture fastener 135 are retrieved, causing the first suture 133 to detach from the first suture fastener 134 and the second suture fastener 135. The first suture segment 1421 or the second suture segment 1422 is pulled, pulling both the first fastener 132 and the second fastener 141 outwards from the blood vessel. The knot is then pushed to tighten the first suture segment 1421 and the second suture segment 1422, causing the opposite side walls of the blood vessel to adhere, thereby achieving suturing of the blood vessel wound. It is understood that in other embodiments, three or more pairs of suture fasteners 130 and three or more pairs of puncture needles 140 corresponding to the suture fasteners 130 can be provided.

[0064] The first suture 133 is connected at both ends to two first fasteners 132 on a pair of suture fasteners 130, and the second suture 142 is connected to the second fastener 141. After the first fasteners 132 and the second fasteners 141 are fastened, the suturing of the two sides of the vascular wound is achieved.

[0065] Reference Figure 2 As shown, a thread groove 163 is also provided on the side wall of the guide member 160. The thread groove 163 is arranged along the circumference of the guide member 160, and the first stitching line 133 passes through the thread groove 163 and connects with the first fastener 132.

[0066] Reference Figure 2 As shown, the suturing device 100 also includes a limiting member 170, which is inserted into the tubular member 120. The limiting member 170 has a plurality of limiting holes 171, which are arranged along the axial direction of the tubular member 120. The pusher 151 and the puncture needle 140 are respectively inserted into the corresponding limiting holes 171.

[0067] A limiting member 170 is inserted inside the tubular member 120. The limiting member 170 is bonded, fused, or connected to the inner wall of the tubular member 120 by fasteners. The limiting member 170 is located on the side of the suture fastener 130 near the proximal end. The limiting member 170 has multiple first limiting holes 1711 and multiple second limiting holes 1712. The number of first limiting holes 1711 corresponds to the number of pushers 151. The first limiting holes 1711 are arranged along the axial direction of the tubular member 120, and the pushers 151 pass through the first limiting holes 1711 and connect to the handle 110. The number of second limiting holes 1712 corresponds to the number of puncture needles 140. The second limiting holes 1712 are arranged along the axial direction of the tubular member 120, and the puncture needles 140 pass through the second limiting holes 1712 and connect to the handle 110.

[0068] The limiting member 170 is inserted into the tubular member 120. The limiting member 170 has multiple limiting holes 171. The limiting holes 171 are arranged along the axial direction of the tubular member 120, so that the pusher 151 and the puncture needle 140 can pass through the corresponding limiting holes 171 and connect with the handle 110. The limiting holes 171 can limit the radial displacement of the pusher 151 and the puncture needle 140, and prevent the pusher 151 and the puncture needle 140 from interfering with each other during the push process by the handle 110.

[0069] Reference Figure 9As shown, the tubular component 120 further includes a multi-lumen tube 123, which is located on the proximal side of the suture fastener 130. The multi-lumen tube 123 includes a first cavity 1231, a second cavity 1232, and a third cavity 1233 arranged axially. The angle control component 150 passes through the first cavity 1231 and is connected to the handle 110. The puncture needle 140 passes through the second cavity 1232 and is connected to the handle 110. The third cavity 1233 communicates with the handle 110.

[0070] The first cavity 1231, the second cavity 1232, and the third cavity 1233 are all connected to the handle 110. The first cavity 1231, the second cavity 1232, and the third cavity 1233 are coaxially arranged. The first cavity 1231 is located inside the second cavity 1232, and the second cavity 1232 is located inside the third cavity 1233. The first cavity 1231 is correspondingly arranged with all the second limiting holes 1712. All the puncture needles 140 pass through the second limiting holes 1712 and the first cavity 1231 in sequence and are connected to the handle 110. The second cavity 1232 is correspondingly arranged with the first limiting hole 1711. All the pushers 151 pass through the first limiting hole 1711 and the second cavity 1232 in sequence and are connected to the handle 110. The handle 110 is provided with a blood outlet (not shown in the figure), and the third cavity 1233 is connected to the blood outlet. The third cavity 1233 is used to deliver blood from the blood vessel to the blood outlet so that the operator can identify that the delivery device has entered the blood vessel.

[0071] The multi-lumen tube 123 includes a first cavity 1231, a second cavity 1232, and a third cavity 1233 arranged axially, so that the puncture needle 140 can be inserted into the first cavity 1231 and the pusher 151 can be inserted into the second cavity 1232. In this way, the pusher 151 and the puncture needle 140 can be spaced apart to prevent the pusher 151 and the puncture needle 140 from interfering with each other during the pushing process.

[0072] Reference Figure 11As shown, the handle 110 includes a housing 111, a first control member 112, and a second control member 113. The housing 111 has a cavity structure, and the distal end of the housing 111 is connected to a multi-cavity tube 123. The first control member 112 is slidably connected to the housing 111 and passes through the housing 111 to connect with the pusher 151. A through hole 1111 is provided on the side wall of the housing 111. The first control member 112 is inserted into the through hole 1111. Multiple protrusions 1112 are provided in the through hole 1111. The side wall of the first control member 112 fits against the multiple protrusions 1112 and has a certain elastic force. The protrusions 1112 are used to increase the sliding resistance of the first control member 112 to increase the control accuracy of the pusher 151. The second control member 113 is connected to the distal end of the housing 111. The distal end of the housing 111 has a sliding groove 1113. The second control member 113 is inserted into the sliding groove 1113 and can slide within the sliding groove 1113. The second control member 113 passes through the sliding groove 1113 and is connected to the puncture needle 140. A spring 1114 is also provided between the second control member 113 and the inner wall of the housing 111. One end of the spring 1114 abuts against the second control member 113, and the other end of the spring 1114 abuts against the inner wall of the housing 111. The spring 1114 is used to reset the second control member 113.

[0073] Example 2

[0074] The difference between this embodiment and Embodiment 1 is that, referring to... Figure 12 As shown, the angle control assembly 150 includes a first elastic rod 155, a second elastic rod 156, and a third elastic rod 157. The proximal end of the first elastic rod 155 is connected to the first control member 112, and the distal end of the first elastic rod 155 is connected to the second elastic rod 156 and the third elastic rod 157. The second elastic rod 156 and the third elastic rod 157 are arranged at a predetermined angle. The distal end of the second elastic rod 156 abuts against the tubular member 120, and the distal end of the third elastic rod 157 is connected to the suture fastener 130. The puncture needle 140 is movably connected to the second elastic rod 156.

[0075] The first elastic rod 155, the second elastic rod 156, and the third elastic rod 157 are all made of elastic material and can deform to a certain extent under stress. The first elastic rod 155, the second elastic rod 156, and the third elastic rod 157 can be welded or integrally formed by cutting a tubular component 120. The second elastic rod 156 is provided with a guide portion 1561, which has a guide hole facing the distal end of the suture fastener 130. The puncture needle 140 passes through the guide hole and can slide within it. The distal end of the third elastic rod 157 is welded to the suture fastener 130.

[0076] Reference Figure 13As shown, during the movement of the first elastic rod 155 toward the distal end, the first elastic rod 155 drives the proximal end of the second elastic rod 156 to move toward the center of the tubular member 120. The first elastic rod 155 also drives the proximal end of the third elastic rod 157 to move toward the center of the tubular member 120. Under the abutment of the tubular member 120, the second elastic rod 156 undergoes elastic deformation, causing the included angle between the second elastic rod 156 and the third elastic rod 157 to gradually increase from a1 to a2, a3, a4, or a5. Under the guidance of the second elastic rod 156, the puncture needle 140 also tilts more towards the radial outer side of the tubular member 120. Under the compression of the proximal end of the third elastic rod 157, it moves toward the center of the tubular member 120, causing the third elastic rod 157 to simultaneously push the suture fastener 130 toward the radial outer side of the tubular member 120. During the movement of the first elastic rod 155 towards its proximal end, the first elastic rod 155 drives the proximal end of the second elastic rod 156 to move away from the center of the tubular member 120. The distal end of the first elastic rod 155 also drives the proximal end of the third elastic rod 157 to move away from the center of the tubular member 120. Under the pulling action of the first elastic rod 155, the angle between the second elastic rod 156 and the third elastic rod 157 gradually decreases from a5 to a4, a3, a2 or a1. Under the guiding action of the second elastic rod 156, the angle between the puncture needle 140 and the axis of the tubular member 120 decreases. Under the squeezing action of the proximal end of the third elastic rod 157, it moves away from the center of the tubular member 120, so that the third elastic rod 157 can simultaneously push the suture fastener 130 to move towards the radial inner side of the tubular member 120.

[0077] The first elastic rod 155 is connected to the first control member 112 via its proximal end, and to the second elastic rod 156 and the third elastic rod 157 via its distal end. The second elastic rod 156 and the third elastic rod 157 are set at a predetermined angle. The distal end of the second elastic rod 156 abuts against the tubular member 120, and the distal end of the third elastic rod 157 is connected to the suture fastener 130. The puncture needle 140 is movably connected to the second elastic rod 156, allowing the first elastic rod 155 to simultaneously push the second elastic rod 156. The movement of the second elastic rod 156 and the third elastic rod 157 allows the first elastic rod 155 to simultaneously control the included angle between the second elastic rod 156 and the third elastic rod 157, as well as the length of the suture fastener 130 extending beyond the tubular member 120. This ensures that the guide needle direction of the second elastic rod 156 always passes through the end of the suture fastener 130 away from the tubular member 120, guaranteeing that after adjusting the suture spacing of the suture fastener 130, the puncture needle 140 can engage with the suture fastener 130.

[0078] During the process of suturing the opening 220 of the blood vessel 210 by the suturing device, such as Figure 14As shown, the tubular member 120 passes through the vascular wound 220 and enters the blood vessel, pushing the first elastic rod 155, causing the third elastic rod 157 to drive the suture fastener 130 to extend outward from the outside of the tubular member 120, until the end of the suture fastener 130 away from the center of the tubular member 120 is located on the side away from the opening 220; as shown Figure 15 As shown, the distal end of the tubular member 120 moves toward the opening 220, causing the suture fastener 130 to abut against the inner wall of the blood vessel 210 (i.e., from...). Figure 14 The position where the suture fastener 130 was spaced apart from the inner wall of the blood vessel 210 is moved to a position where the suture fastener 130 is in contact with the inner wall of the blood vessel 210; such as Figure 16 As shown, the puncture needle 140 is pushed through the side wall of the blood vessel 200 and engages with the suture fastener 130, thus connecting the first suture 133, the first suture segment 1421, and the second suture segment 1422; as shown Figure 17 As shown, pull the first suture segment 1421 or the second suture segment 1422 to position the puncture needle 140 outside the blood vessel, and retract the suture fastener 130 to dislodge the first suture 133. Figure 18 As shown, push the knot 180 to tighten the first suture 133, the first suture segment 1421, and the second suture segment 1422, thereby suturing the opening 220.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suturing device, characterized in that, include: handle; The tubular component that connects to the handle; At least one pair of suture fasteners, at least one pair of puncture needles corresponding to the suture fasteners, the suture fasteners and the puncture needles being inserted into the tubular member; At least two angle control components are provided, which are respectively connected to the handle, the suture fastener, and the tubular member. The handle is used to drive the angle control components to move. The angle control components are used to increase the angle between the suture fastener and the puncture needle while driving the suture fastener to extend radially outward from inside the tubular member, or to decrease the angle between the suture fastener and the puncture needle while driving the suture fastener to retract from outside the tubular member into the tubular member. The angle control assembly includes a pusher, a first connecting rod, a guide needle, and a second connecting rod. The proximal end of the pusher is connected to the handle, and the distal end of the pusher is rotatably connected to the first connecting rod. The first connecting rod is rotatably connected to the guide needle, and the guide needle is rotatably connected to the tubular component. The two ends of the second connecting rod are rotatably connected to the guide needle and the suture fastener, respectively. The puncture needle is inserted into the guide needle. The pusher is used to drive the first connecting rod to move, the first connecting rod is used to drive the guide needle and the second connecting rod to move, and the second connecting rod is used to drive the suture fastener to move.

2. The suturing device according to claim 1, characterized in that, The guide needle component has a guide needle hole, and the axis of the guide needle hole passes through the position where the suture fastener is connected to the puncture needle.

3. The suturing device according to claim 1, characterized in that, The suturing device further includes a guide member disposed inside the tubular member. The proximal end of the guide member has a plurality of guide grooves. The guide grooves are bent from near the center of the tubular member toward the outside of the tubular member. The suture fastener passes through the guide grooves.

4. The suturing device according to claim 3, characterized in that, The distal end of the guide member has an inclined structure, and the side wall of the tubular member has a guide wire through hole, with the inclined structure facing the guide wire through hole.

5. The suturing device according to claim 1, characterized in that, The suture fastener includes a first fastener, and the puncture needle includes a second fastener, with the first fastener and the second fastener engaging in a snap-fit ​​connection.

6. The suturing device according to claim 5, characterized in that, The suture fastener also includes a first suture, one end of which is connected to the first fastener, and the other end of which is connected to the first fastener on another corresponding suture fastener. The puncture needle includes a second suture, which is connected to the second fastener, and also includes a knot, which is at least sleeved on two second sutures connected to the same first suture.

7. The suturing device according to claim 1, characterized in that, The suturing device also includes a limiting member, which is inserted into the tubular member. The limiting member has multiple limiting holes, which are arranged along the axial direction of the tubular member. The pusher and the puncture needle are respectively inserted into the corresponding limiting holes.

8. The suturing device according to claim 1, characterized in that, The tubular component further includes a multi-lumen tube located on the proximal side of the suture fastener. The multi-lumen tube includes a first cavity, a second cavity, and a third cavity arranged axially. The angle control component passes through the first cavity and is connected to the handle. The puncture needle passes through the second cavity and is connected to the handle. The third cavity communicates with the handle.

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