A vascular stapler

Abstract

The application relates to a blood vessel suturing device, which comprises an operating handle and at least two suturing groups arranged at the distal end of the operating handle, wherein each group of suturing components comprises a first tube, a second tube matched with the first tube and a suturing needle arranged in the first tube, the operating handle is configured to drive the suturing needle to stretch out from the first tube, enter into the second tube and be separated from the first tube, the groups of suturing components are arranged side by side, and the planes in which the suturing tracks of the suturing needles of the groups of suturing components pass through intersect with each other. The blood vessel suturing device disclosed by the application can realize quick suturing of a large-size stoma by single operation, the suturing process is simple, and the suturing lines of the suturing area naturally form intersections after the suturing is completed, so that the large-size stoma is closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of interventional instruments, in particular to a blood vessel suturing device. BACKGROUND

[0002] Interventional therapy is a treatment method that uses puncture needles, catheters and other interventional instruments to introduce specific instruments into the lesion site of the human body through natural orifices or small incisions of the human body under the guidance and monitoring of imaging equipment such as angiography machines, CT, ultrasound and magnetic resonance.

[0003] Taking vascular interventional treatment as an example, after an access is formed on the blood vessel, the interventional instrument is sent into the blood vessel through the access and reaches the lesion site for treatment. After the treatment is completed, the interventional instrument is withdrawn and the access is sutured. This method has the advantage of being able to complete the treatment with minimal damage.

[0004] The selection of the interventional blood vessel and the size of the access need to be selected according to the size of the interventional instrument. When the size of the interventional instrument is large, a large-diameter interventional blood vessel needs to be selected and the size of the access needs to be increased, which increases the difficulty of suturing the access.

[0005] Because the blood flow in the large-diameter interventional blood vessel is faster, the suturing needs to be completed in a shorter time, and the large-size access needs to be sutured multiple times and the suturing lines need to be crossed. Each suture needs to use a guide wire to intervene, which makes the whole suture process complex and needs to be manually adjusted at different angles to make the suturing lines cross each other and other problems.

[0006] Therefore, the prior art still needs to be improved and improved. SUMMARY

[0007] In order to solve the problem of suturing a large-size access, the present application provides a blood vessel suturing device which can realize fast suturing of a large-size access through a single operation, the suturing process is simple, and the suturing lines in the suturing area naturally form a cross after the suturing is completed, thereby sealing the large-size access.

[0008] The above object of the present application is achieved by the following technical solution. In a first aspect of the present application, a blood vessel suturing device is provided, comprising: an operating handle; and at least two suturing assemblies arranged at the distal end of the operating handle, wherein each group of the suturing assemblies comprises a first tube, a second tube matched with the first tube, and a suturing needle located in the first tube; wherein the operating handle is configured to drive the suturing needle to extend out of the first tube and then extend into the second tube, and the suturing needle is separated from the first tube, wherein each group of the suturing assemblies is arranged side by side, and at least two planes intersect in the plane where the suturing trajectories of the suturing needles of each group of the suturing assemblies pass through.

[0009] Further, in the blood vessel suturing device, planes of the suturing trajectories provided by the two suturing needles are perpendicular to each other.

[0010] Further, in the blood vessel suturing device, the two suturing needles are provided in a number of two, and planes of the suturing trajectories provided by the two suturing needles form an angle in a range of 45 degrees to 135 degrees.

[0011] Further, in the blood vessel suturing device, planes of the suturing trajectories provided by the two suturing needles are perpendicular to each other.

[0012] Further, in the blood vessel suturing device, the blood vessel suturing device further comprises an anchoring assembly, the anchoring assembly comprises an anchoring assembly tube, a deformation member and a driving member; the two suturing assemblies are arranged side by side in the anchoring assembly tube; the deformation member is located at a distal end of the anchoring assembly tube, and the deformation member comprises a contracted state and an expanded state; in the contracted state, the deformation member does not protrude from the anchoring assembly tube; in the expanded state, the deformation member protrudes from the anchoring assembly tube and abuts against a blood vessel wall; a distal end of the driving member is connected with the deformation member, and a proximal end of the driving member is connected with an operating handle or is a free end.

[0013] Further, in the blood vessel suturing device, the deformation member comprises a balloon, and the driving member comprises a balloon catheter.

[0014] Further, in the blood vessel suturing device, the deformation member and the suturing assembly are provided in a number of two; planes of the suturing trajectories provided by the two suturing needles form an angle in a range of 45 degrees to 135 degrees, and the suturing trajectories provided by the two suturing needles divide four regions, and the two deformation members are located in two non-adjacent regions respectively.

[0015] Further, in the blood vessel suturing device, the blood vessel suturing device further comprises a guide assembly, a distal end of the guide assembly is connected with a distal end of the anchoring assembly tube, a guide wire cavity is arranged in the guide assembly, and the guide wire cavity is in communication with the anchoring assembly tube.

[0016] Further, in the blood vessel suturing device, a relief hole is arranged on a tube wall of the anchoring assembly tube, and the relief hole is used for allowing the suturing needle to pass through.

[0017] Further, in the blood vessel suturing device, the suturing assembly further comprises a release tube arranged in the first tube, the suturing needle is arranged in the release tube in a sliding manner; a push shaft, a proximal end of the push shaft is connected with the operating handle, and a distal end of the push shaft is detachably connected with the suturing needle; the push shaft is configured to push the suturing needle out of the release tube, and then drive the suturing needle to bend after the suturing needle extends out of the release tube and extend into the second tube.

[0018] Overall, the blood vessel suture device provided by the application realizes single suture on a large-size intervascular port on a blood vessel by arranging at least two suture assemblies. During the suture process, the at least two suture assemblies simultaneously puncture the blood vessel walls on both sides of the intervascular port, and an included angle exists between the at least two suture lines left after the puncture is completed, so that the intersection at the intervascular port can be naturally formed. The operation steps during the suture process are less, the suture speed is fast, and the large-size intervascular port can be quickly closed. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

[0020] Figure 1 is a perspective structural schematic view of a blood vessel suture device provided by the application;

[0021] Figure 2 is a partial structural schematic view of a double-suture assembly blood vessel suture device provided by the application;

[0022] Figure 3 is an action schematic view of a deformation member entering a blood vessel provided by the application;

[0023] Figure 4 is a suture position schematic view when an intervascular port is sutured, and four circular dots in the figure represent positions of suture needles when the suture needles pass through the blood vessel wall;

[0024] Figure 5 is a suture trajectory schematic view of a suture assembly provided by the application, and a dashed line in the figure represents a suture trajectory;

[0025] Figure 6 is a structural schematic view of a suture assembly provided by the application;

[0026] Figure 7 is a structural schematic view of an anchor assembly provided by the application;

[0027] Figure 8 is a structural schematic view of another deformation member provided by the application;

[0028] Figure 9 is a state schematic view of a deformation member provided by the application when the deformation member is deformed; Figure 8

[0029] Figure 10 is a cross-sectional schematic view of a pipe body of an anchor assembly provided by the application;

[0030] Figure 11 is a structural schematic view of still another deformation member provided by the application;​

[0031] Figure 12 is based on Figure 11 a state diagram of the deformation member when the deformation member is deformed is given;

[0032] Figure 13 is a structural diagram of an introduction assembly provided by the present application;

[0033] Figure 14 is a diagram of the suture needle passing through the avoidance hole and resetting provided by the present application;

[0034] Figure 15 is a diagram of the first receiving structure existing on the second tube body provided by the present application;

[0035] Figure 16 is a diagram of the second receiving structure existing on the receiving tube provided by the present application;

[0036] Figure 17 is a diagram of the suture passing through the blood vessel wall at the access port provided by the present application;

[0037] Figure 18 is a diagram of the suture knotting completion provided by the present application; and

[0038] In each of the drawings, the same or corresponding reference numerals represent the same or corresponding parts; wherein the reference numerals are: 1, operation handle, 2, anchoring assembly, 21, anchoring assembly tube body, 22, deformation member, 23, driving member, 3, suturing assembly, 31, first tube body, 32, second tube body, 33, suture needle, 34, receiving tube, 4, introduction assembly, 41, catheter, 42, guide wire lumen, 211, avoidance hole, 35, release tube, 36, push shaft, 321, first receiving structure, 341, second receiving structure, 601, blood vessel, 602, access port, 603, guide wire passage, 604, suture passage, 605, first tube body passage, 606, second tube body passage, 607, balloon catheter passage, 608, calcified blood vessel (blood vessel wall), 609, suture. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure will be described in more detail with reference to the drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0040] In the description of embodiments of the present disclosure, the term "includes" and its conjugates are to be construed as open-ended, i.e., "includes but is not limited to". The term "based on" is to be construed as "based at least in part on". The term "one embodiment" or "an embodiment" is to be construed as "at least one embodiment". The terms "first", "second", etc. can refer to different or same objects. Other explicit or implicit definitions can also be included below.

[0041] In addition, it should be noted that in the description of the embodiments of the present application, unless otherwise explicitly defined, "in vivo" means in the tissue and organs of the patient, and "in vitro" means outside the tissue and organs of the patient. Meanwhile, in the embodiments of the present application, "distal" refers to the direction away from the physician, and "proximal" refers to the direction close to the physician.

[0042] In some embodiments, referring to Figure 1 , the present application discloses a vascular suture device, mainly composed of an operation handle 1, an anchoring assembly 2 and a suture assembly 3, the anchoring assembly 2 is connected with the operation handle 1, as Figure 2 shown, the anchoring assembly 2 is provided with a shape-changing part 22, the cross-sectional size of the shape-changing part 22 can be increased and decreased.

[0043] Further, referring to Figure 3 , the shape-changing part 22 can abut against the inner wall of the blood vessel at the access port, providing a basis for subsequent suture operation. Because when the shape-changing part 22 abuts against the inner wall of the blood vessel at the access port, the shape-changing part 22 can not only provide the operator with a basic position perception, but also tighten the blood vessel walls on both sides of the access port, so that the suture assembly 3 can accurately pass through the blood vessel walls and suture the blood vessel walls on both sides of the access port.

[0044] Further, the anchoring assembly is also provided with a channel inside, the channel is for the guide wire to pass through. Because after the interventional therapy is completed, part of the guide wire is located in the blood vessel and part of the guide wire is located outside the blood vessel, the anchoring assembly 2 needs to be guided by the guide wire when entering the blood vessel.

[0045] Further, the guide wire located outside the blood vessel is first inserted into the channel in the anchoring assembly 2, and then the operator will continuously push the anchoring assembly 2 to move towards the blood vessel, and the end of the anchoring assembly 2 away from the operation handle 1 will be stretched into the blood vessel under the guidance of the guide wire during the process.

[0046] Further, when the shape-changing part 22 enters the blood vessel to the target position through the access port, its volume can be increased. At this time, the operator slightly pulls the operation handle 1 towards the proximal end, and the shape-changing part 22 will abut against the inner wall of the blood vessel at the access port.

[0047] In some embodiments, the number of the suture assemblies 3 is two or more, and the suture trajectories of at least two of the suture assemblies 3 are in two planes intersecting with each other, as shown in Figure 4 and Figure 5 , the suture trajectories and the suture schematic diagram on the blood vessel.

[0048] In some possible implementations, the suture trajectories of each group of the suture assemblies 3 pass through the operation handle 1.

[0049] In some example embodiments, the number of the suture assemblies 3 is two, and the planes in which the suture trajectories provided by the two suture assemblies 3 form an angle in the range of 45 degrees to 135 degrees.

[0050] In some possible implementations, the planes in which the suture trajectories provided by the two suture assemblies 3 are perpendicular to each other, that is, the planes in which the suture trajectories provided by the two suture assemblies 3 form an angle in the range of 90 degrees.

[0051] In some embodiments, referring to Figure 2 and Figure 6 , the suture assembly 3 is composed of a first tube 31, a second tube 32 and a suture needle 33, and the first tube 31 and the second tube 32 are located in the anchoring assembly 2. The number of the first tubes 31 and the second tubes 32 is the same and is multiple, and one first tube 31 and one second tube 32 are arranged correspondingly to form a group.

[0052] In some possible implementations, the number of the first tubes 31 and the second tubes 32 is two, and the two first tubes 31 and the second tubes 32 can form a suture similar to an “X” shape at the stoma, as shown in Figure 5 .

[0053] It should be noted that in some embodiments, the number of the first tubes 31 can be at least two, and the at least two first tubes 31 are arranged adjacently.

[0054] Further, one suture needle 33 is placed in each first tube 31, and the suture needle 33 is connected with the operation handle 1 and can be stretched out of the first tube 31 and into the second tube 32 under the driving of the operation handle 1. The operation handle 1 is also connected with the first tube 31 and the second tube 32 and can drive the first tube 31 and the second tube 32 to stretch out of and retract into the anchoring assembly 2.

[0055] In some embodiments, referring to Figure 2 and Figure 7The anchoring assembly 2 is composed of an anchoring assembly tube 21, a deformation member 22 and a driving member 23. The anchoring assembly tube 21 is connected to the operating handle 1. The deformation member 22 is installed on the anchoring assembly tube 21. The first end of the driving member 23 is connected to the deformation member 22, and the second end is connected to the operating handle 1 or is a free end. In this way, the operating handle 1 or the driving member 23 can force the cross-sectional size (in the plane perpendicular to the guide wire) of the deformation member 22 to increase and decrease through the driving member 23. When the deformation member 22 enters the blood vessel through the intermediate port to the target position, the deformation member 22 is accommodated in the anchoring assembly tube 21, and the outer surface of the deformation member 22 does not protrude from the anchoring assembly tube 21. When the deformation member 22 enters the blood vessel through the intermediate port to the target position, the volume of the deformation member 22 can increase. At this time, the operator slightly pulls the operating handle 1 towards the proximal end, and the deformation member 22 abuts against the inner wall of the blood vessel at the intermediate port.

[0056] Further, the deformation member 22 is located at the distal end of the anchoring assembly tube 21, and the deformation member 22 has two states, namely a contracted state and an expanded state. In the contracted state, the deformation member 22 does not protrude from the anchoring assembly tube 21; in the expanded state, the deformation member 22 protrudes from the anchoring assembly tube 21 and abuts against the blood vessel wall.

[0057] In some alternative embodiments, the deformation member 22 and the driving member 23 have the following structural forms:

[0058] In the first embodiment, referring to Figure 7 The deformation member 22 includes a balloon, and the driving member 23 includes a balloon catheter with a valve. The balloon catheter is in communication with the space inside the balloon. By injecting gas or liquid (medical saline, contrast medium, etc.) into the balloon through the balloon catheter, the volume of the balloon increases; by discharging the gas or liquid in the balloon, the volume of the balloon decreases. By adjusting the volume of the balloon, different blood vessel walls can be adapted.

[0059] Further, the volume change of the balloon causes the cross-sectional size (in the plane perpendicular to the guide wire) of the balloon to change synchronously. The first end of the balloon catheter is connected to the balloon, and the second end extends out of the operating handle 1 or the anchoring assembly tube 21 near the operating handle 1 after passing through the channel in the anchoring assembly tube 21.

[0060] Further, when the valve is opened, the second end of the balloon catheter changes from a closed state to an open state, at which time liquid can be injected into the balloon through the pipeline or the liquid in the balloon can be removed.

[0061] Further, when the volume of the balloon increases and abuts against the inner wall of the blood vessel at the suture site, it can play a certain sealing role, reducing the outflow of blood in the blood vessel from the suture site, and even at this time the blood in the blood vessel does not flow out from the intermediate port.

[0062] In the second embodiment, please refer to Figure 8 The deformation member 22 is composed of an expansion stent, two sections of catheter and a section of traction wire. The two sections of catheter are fixed at the two ends of the expansion stent respectively. The difference is that the first section of catheter is fixed on the outer wall of the pipe body 21 of the anchoring assembly, and the second section of catheter has a gap with the outer wall of the pipe body 21 of the anchoring assembly.

[0063] In some embodiments, when the second section of catheter moves towards the first section of catheter, the catheter deforms, and at this time, the diameter of the catheter increases, that is, the diameter of the expansion stent increases, as shown in Figure 9

[0064] In some embodiments, when the second section of catheter moves away from the first section of catheter, the diameter of the expansion stent decreases.

[0065] In the first embodiment, the number of the above-mentioned deformation member 22 and the above-mentioned suture assembly 3 is two. The two deformation members 22 and the two suture assemblies 3 are arranged alternately around the axis of the pipe body 21 of the anchoring assembly, that is, there is a suture assembly 3 between the two deformation members 22, and there is a deformation member 22 between the two suture assemblies 3.

[0066] In another embodiment, the number of the above-mentioned deformation member 22 and the above-mentioned suture assembly 3 is two. The suture assembly 3 is divided into four areas by the provided suture track. The two deformation members 22 are respectively located in two non-adjacent areas. For example, at this time, there are two first pipe bodies 31 and two second pipe bodies 32. The axes of the first pipe body 31 and the second pipe body 32 are perpendicular to the paper surface. Exemplarily, the axis line of the two first pipe bodies 31 and the two second pipe bodies 32 can draw four intersecting areas after being connected, that is, the two first pipe bodies 31 and the two second pipe bodies 32 are divided into four areas by the provided suture track. At this time, one deformation member 22 is arranged in the left area of the paper surface near the two first pipe bodies 31, and the other deformation member 22 is arranged in the right area of the paper surface near the two second pipe bodies 32, that is, the two deformation members 22 are respectively located in two non-adjacent areas.

[0067] With the access port as the reference, the two deformation members 22 are respectively used to fix the blood vessel walls on both sides of the access port, which can obtain better fixing effect.

[0068] Further, the first end of the traction wire is connected with the second section of catheter, and the second end of the traction wire is connected with the operating handle 1 after passing through the channel in the pipe body 21 of the anchoring assembly or protruding from the pipe body 21 of the anchoring assembly near the operating handle 1. When the traction wire is pulled through the operating handle 1 or directly pulled, the second section of catheter will move towards or away from the first section of catheter.

[0069] In some embodiments, the expansion stent in the second structure can be made of memory alloy. ​

[0070] In the third embodiment, referring to Figure 11 and Figure 12 , the inflatable stent in the second structure is replaced by a section of elastic catheter, the side wall of which is provided with grooves, and the traction wire can deform the section of elastic catheter, at which time the diameter of the catheter increases; when the force on the traction wire disappears, the length of the section of elastic catheter will recover, and the diameter of the catheter will decrease at the same time.

[0071] In some embodiments, the inflatable stent in the third structure can be cut from a molecular material or mixed with a high molecular material.

[0072] Further, referring to Figure 1 , in some embodiments, an introduction assembly 4 is provided, which is detachably fixed to the anchoring assembly 2, for example, by insertion.

[0073] Further, referring to Figure 13 , the introduction assembly 4 is provided with a guide wire lumen 42, which is in communication with the anchoring assembly tube 21. The guide wire mentioned above will first enter the guide wire lumen 42 in the introduction assembly 4, and then enter the anchoring assembly tube 21 through the guide wire lumen 42.

[0074] Further, because the introduction assembly 4 is elastic, after entering the blood vessel through the access port, it will move along the guide wire and deform. As the length of the contact between the introduction assembly 4 and the guide wire increases, the anchoring assembly 2 located behind the introduction assembly 4 can also smoothly enter the blood vessel through the access port.

[0075] Further, the introduction assembly 4 is composed of a catheter 41, and the guide wire lumen 42 is located in the catheter 41.

[0076] Referring to Figure 2 , in some embodiments, the anchoring assembly tube 21 is provided with a relief hole 211 matched with the first tube 31, which is used to guide one end of the suture needle 33 to extend into the second tube 32. The relief hole 211 can correct or guide the movement track of the suture needle 33, the purpose of which is to ensure that one end of each suture needle 33 can extend into the corresponding second tube 32 in one suture process.

[0077] Further, the suture needle 33 includes an elastic deformation member capable of resetting to a curved shape. In the initial state, the suture needle 33 is accommodated in the first tube 31 and deformed under stress, and after the suture needle 33 extends out of the first tube 31 and resets to a curved shape, it passes through the relief hole and is accommodated in the second tube 32 and deformed under stress again.

[0078] In the above process, the suture needle 33 penetrates into the blood vessel wall from one side of the access port, and then penetrates out of the blood vessel wall from the other side of the access port. When the end of the suture needle 33 penetrates out of the blood vessel wall from the other side of the access port, the end of the suture needle 33 extends into the second tube 32 corresponding to the end.

[0079] Further, the shape of the part of the suture needle 33 in the second tube 32 changes again, and the bending degree decreases. At this time, the end of the suture needle 33 is pressed against the inner wall of the second tube 32.

[0080] In the above process, the suture needle 33 is removed from the blood vessel to be sutured. The two ends of the suture line carried by the suture needle 33 are located outside the blood vessel to be sutured and are located on the two sides of the access port respectively. The middle part of the suture line is located inside the blood vessel to be sutured.

[0081] Because the number of suture needles 33 is at least two, in one operation process, multiple suture lines appear at the access port on the blood vessel at the same time, as shown in Figure 5

[0082] The blood vessel suture device provided in the various embodiments of the present disclosure is mainly used for suturing a large-diameter blood vessel wound. At present, the suturing method for such a large-diameter blood vessel wound is multiple suturing. The difficulty of this suturing method is that in one complete suturing process, a part of the suture device needs to be sent into the blood vessel. Each suturing causes the available length of the blood vessel wound to be shortened, that is, the latter suturing may damage the sutured part of the former suturing, and there is also a secondary trauma to the blood vessel wound.

[0083] In addition, the bleeding during the suturing process also affects the line of sight of the operator. The bleeding needs to be cleaned before the suturing can continue. Obviously, this will prolong the suturing time. The blood vessel displacement in multiple suturing also increases the difficulty of suturing.

[0084] It should be noted that taking twice suturing as an example, after the first suture line is threaded through the blood vessel walls on the two sides of the access port, the first suture line cannot be tied. Then a second suture line needs to be arranged. When the second suture line is arranged, the position of the first suture line needs to be used to determine the angle of the second suture line. This itself has a certain degree of difficulty. Because the suture device repeatedly enters and exits the access port, blood flows out of the access port, and the shape of the access port changes. These actual situations need to be repeatedly confirmed and operated by the operator.

[0085] In some possible implementations, the second tube 32 is provided with a first receiving structure 321 for fixing the suture needle 33. Please refer to Figure 15 ​For example, a fixed hole is provided on the second tube 32, so that the suture needle 33 can be limited by a receiving structure 321 in the second tube 32. The main function of the first receiving structure 321 is to increase the temporary connection strength between the suture needle 33 and the second tube 32, so as to avoid the suture needle 33 from falling off the second tube 32 when the suture needle 33 moves with the second tube 32. Because in the case of falling off, the suture needle 33 is very likely to be pulled back into the blood vessel again.

[0086] Further, when the suture needle 33 partially enters the second tube 32, the end of the suture needle 33 will press against the inner wall of the second tube 32, and when the end of the suture needle 33 moves to the first receiving structure 321, the end of the suture needle 33 will directly enter the first receiving structure 321, at which time the temporary connection strength between the suture needle 33 and the second tube 32 will be increased.

[0087] Further, referring to Figure 6 and Figure 16 , a receiving tube 34 is added, which is arranged in the second tube 32 and connected with the operating handle 1, and the operating handle 1 is configured to drive the receiving tube 34 to extend out of and retract into the second tube 32.

[0088] Further, because the second tube 32 needs to move synchronously with the first tube 31, which means that the extension and retraction range of the second tube 32 is limited, and there may be a problem that the suture needle 33 needs to be pulled multiple times to reach the position.

[0089] Further, after the receiving tube 34 is added, when the end of the suture needle 33 extends into the receiving tube 34, the suture needle 33 can be completely or mostly pulled into the second tube 32 through the receiving tube 34, and after the anchor assembly 2 is pulled away from the blood vessel, only the suture line remains at the interventional access, and the suture line is manually knotted and pushed to the blood vessel wall, so as to close the interventional access.

[0090] Further, referring to Figure 16 , a second receiving structure 341 for fixing the suture needle 33 is added on the receiving tube 34, and the function of the second receiving structure 341 is the same as that of the first receiving structure 321, which will not be described here. The operating handle 1 can drive the push shaft 36 to push the suture needle 33 out of the release tube 35, and after the suture needle 33 extends out of the release tube 35, it is bent and extends into the second tube 32.

[0091] Further, the first end of the push shaft 36 is connected with the operating handle 1, and the second end is detachably connected with the suture needle 33, for example, low-strength glue connection, tight fit or press fit, etc.

[0092] In some other embodiments, the suture assembly can further comprise a release tube, a push shaft, the release tube can be located inside the first tube body, the suture needle can be located inside the release tube, the suture needle can carry a suture line, one end of which is connected to the suture needle, and the other end of which is located between the first tube body and the anchor assembly tube body. Further, the suture needle can be an elastic deformation member capable of being reset to a curved shape, and the connection between the suture needle and the push shaft can use a detachable connection method.

[0093] It should be noted that in some other embodiments, when the vascular suture device reaches the target position and the blood vessel is tensioned by the anchor assembly, the operator pushes the push shaft by operating the handle, at this time the push shaft pushes the suture needle to gradually move out of the release tube, and in this process the suture needle also extends out of the first tube body. After the suture needle extends out of the release tube, the part of the suture needle located outside the release tube is no longer subjected to the constraining force, and this part of the suture needle begins to bend.

[0094] Here, an example of a complete suture process is given, the access port is as shown in Figure 18 .

[0095] Insert one end of the guide wire into the catheter 41, then push the vascular suture device until the deformation member 22 enters the blood vessel through the access port;

[0096] Withdraw the guide wire and adjust the position of the operating handle 1 and the anchor assembly 2;

[0097] Adjust the volume of the deformation member 22 by the driving member, so that the volume of the deformation member 22 increases;

[0098] Gently pull the operating handle 1 towards the proximal end to adjust the position, so that the deformation member 22 abuts against the inner wall of the blood vessel;

[0099] Push the first tube body 31 and the second tube body 32 out of the anchor assembly tube body 21, at this time the first tube body 31 and the second tube body 32 abut against the outer wall of the blood vessel at the access port as much as possible;

[0100] Push the suture needle 33 out of the first tube body 31 by the push shaft 36, at this time the suture needle 33 located outside the first tube body 31 begins to bend, and the end of the bent suture needle 33 extends into the receiving tube 34 at the second tube body 32; after the end of the suture needle 33 enters the receiving tube 34, it is clamped at the second receiving structure 341 of the receiving tube 34;

[0101] Pull the receiving tube 34, the receiving tube 34 drives the suture needle 33 into the second tube body 32;

[0102] Retract the first tube body 31 and the second tube body 32 into the anchor assembly tube body 21, at this time the suture line passes through the blood vessel walls on both sides of the access port, as shown in Figure 17 .

[0103] suture lines with shear redundancy;

[0104] draining the liquid in the deformation member 22 and removing the part of the vessel suture device located inside the blood vessel;

[0105] knotting the two ends of the suture line together and pushing the knot to the blood vessel wall to close the access port, and trimming the excess suture line ends again, as shown in Figure 18 .

[0106] In addition, in another embodiment, as shown in Figure 10 , a cross-sectional view of an anchor assembly tube is shown. In this diagram embodiment, the anchor assembly tube includes a guide wire channel 603 in the center position, a suture line channel 604 arranged around the center guide wire channel 603, a first tube channel 605, a second tube channel 606, and a balloon catheter channel 607. In particular, as shown in Figure 10 , two suture line channels 604 are included, which are arranged symmetrically with respect to the center point of the guide wire channel 603, on the basis of which, a line is formed with the center point of the guide wire channel 603 and the center point of the two suture line channels 604, then the two balloon catheter channels 607 are arranged symmetrically with respect to the line, on the basis of which, the line of the center points of the two suture line channels 604 intersects the line of the center points of the two balloon catheter channels 607 at the center point of the guide wire channel 603, and divides the plane into four regions, then two first tube channels 605 and two second tube channels 606 are arranged in the four regions, wherein in the diagram, the two first tube channels 605 are in the upper half of the two plane regions, and the two second tube channels 606 are in the lower half of the two plane regions.

[0107] The above has described the embodiments of the present disclosure, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

[0108] The above is only an optional embodiment of the present disclosure, and is not intended to limit the present disclosure. The present disclosure can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A vascular suturing device, characterized by, The blood vessel suture device comprises: an operation handle; and at least two suture assemblies arranged at the distal end of the operation handle, wherein each of the suture assemblies comprises a first tube, a second tube matched with the first tube, and a suture needle arranged in the first tube; wherein the operation handle is configured to drive the suture needle to extend out of the first tube, bend and extend into the second tube, and separate from the first tube, wherein each of the suture assemblies is arranged side by side, and the planes in which the suture tracks of the suture needles of each of the suture assemblies pass intersect with each other. The blood vessel suture device further comprises an anchoring assembly, a tube of the anchoring assembly is provided with a relief hole for the suture needle to pass through, and the relief hole is arranged to guide one end of the suture needle to extend into the second tube by correcting the moving track of the suture needle.

2. The vascular suturing device according to claim 1, characterized in that The planes in which the suture tracks of the suture needles pass intersect with each other in a line.

3. The vascular suturing device according to claim 1, characterized in that, The number of the suture assemblies is two, and the planes in which the suture tracks provided by the two suture needles form an angle in the range of 45 degrees to 135 degrees.

4. The vascular suturing device according to claim 3, characterized in that The planes in which the suture tracks provided by the two suture needles are perpendicular to each other.

5. The vascular suturing instrument according to claim 1, characterized in that The anchoring assembly further comprises a deformation member and a driving member. The tube of the anchoring assembly is internally arranged with the suture assemblies side by side. The deformation member is located at the distal end of the tube of the anchoring assembly, and comprises a contracted state and an expanded state. In the contracted state, the deformation member does not protrude from the tube of the anchoring assembly, and in the expanded state, the deformation member protrudes from the tube of the anchoring assembly and abuts against the wall of the blood vessel. The distal end of the driving member is connected with the deformation member, and the proximal end is connected with the operation handle or is a free end.

6. The vascular suturing device according to claim 5, characterized in that The deformation member comprises a balloon, and the driving member comprises a balloon catheter.

7. The vascular suturing device according to claim 5, characterized in that The number of the deformation members and the suture assemblies is two, and the planes in which the suture tracks provided by the two suture needles form an angle in the range of 45 degrees to 135 degrees. The suture tracks provided by the two suture needles divide four regions, and the two deformation members are respectively located in two non-adjacent regions.

8. The vascular suturing device according to claim 5, characterized in that The blood vessel suture device further comprises: a lead-in assembly, the proximal end of which is connected with the distal end of the tube of the anchoring assembly, and a guide wire cavity is arranged in the lead-in assembly and communicates with the tube of the anchoring assembly.

9. The vascular suturing device as claimed in claim 1, wherein The suture assembly further comprises: a release tube arranged in the first tube, and the suture needle is slidingly arranged in the release tube; a push shaft, the proximal end of which is connected with the operation handle, and the distal end of which is detachably connected with the suture needle; wherein the push shaft is configured to push the suture needle out of the release tube, and then drive the suture needle to extend out of the release tube, bend and extend into the second tube.

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