Medical suturing device

Abstract

The application belongs to the technical field of medical devices, and discloses a medical suturing device, which comprises a thread collector assembly and a thread pusher assembly, the thread collector assembly comprises a thread collector main body and two thread collector needles arranged on the thread collector main body, and the thread pusher assembly comprises a thread pusher main body connected with the thread collector main body and two traction needles arranged on the thread pusher main body, the two traction needles are respectively used for fixing two ends of a suture thread, wherein when the thread collector main body and the thread pusher main body are arranged on two sides of target tissue, the thread pusher main body can move towards the thread collector main body and drive the two traction needles and the suture thread to penetrate the target tissue, and the two end portions of the suture thread can be respectively clamped with the two thread collector needles after penetrating the target tissue. The medical suturing device provided by the application can block the foramen ovale in a suturing manner, can effectively avoid implanting a large amount of metal objects in the patient's body, and can further reduce the risk of complications.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a medical suturing device. BACKGROUND

[0002] Oval foramen is a channel between left and right ventricles in fetal period, and umbilical vein blood from mother also enters left cardiac cavity of fetus through the channel, and then is distributed to the whole body to provide oxygen and nutrients required for fetal development. If there is no oval foramen, the fetus cannot develop normally, so the oval foramen is a necessary and normal physiological structure. After the child is born, the child can establish normal pulmonary circulation, and the mission of the oval foramen is achieved. With the first cry, the left atrial pressure rises, and the left primary septum oval fossa valve is partially attached to the right secondary septum oval fossa edge, and functional closure occurs, and anatomical complete closure generally takes 5-7 months after birth. About 77.6% of newborn babies' oval foramen will close within 1 year. There are also people whose oval foramen is always not closed. If the oval foramen is not normally closed until 3 years old, it is a real patent foramen ovale.

[0003] Most people's left atrial pressure is greater than the right atrial pressure, so even if there is a patent foramen ovale, the left-to-right shunt through the patent foramen ovale is very small and will not cause obvious symptoms. The blood flow from the patent foramen ovale to the left atrium and then to the whole body in the fetal period is for the normal development of the fetus, and the blood flow again after the baby grows up may cause some problems.

[0004] "atrial septal defect" is similar to patent foramen ovale, but it is a congenital heart malformation. Atrial septal defect is caused by abnormality during embryonic development, and usually has symptoms such as shortness of breath, palpitation, and fatigue. Patent foramen ovale and atrial septal defect are both residual patent foramen ovale between left and right atria, which can cause blood to flow between the two atria.

[0005] However, the size of the hole of patent foramen ovale is generally smaller than that of atrial septal defect (about 4mm for patent foramen ovale and about 8mm for atrial septal defect), and the valve defect hole does not extend vertically to the valve wall, that is, the left atrial valve defect hole and the right atrial valve defect hole are different. The diameter of patent foramen ovale reaching 4mm or more is relatively large, and in the prior art, a closure device is placed to close the patent foramen ovale to achieve the purpose of treatment.

[0006] At present, most of the closure devices on the market are disc-shaped, and the structure contains a large amount of metal. Long-term implantation in the heart may cause the closure device to gradually corrode and release toxic substances due to corrosion of blood and friction caused by heart beating, which may increase the risk of complications. In addition, placing the closure device in the heart may cause an alarm even at various airport and train station security facilities, and many patients are not suitable for acceptance. SUMMARY

[0007] The medical suturing device can occlude the foramen ovale by suturing, and can effectively avoid implanting a large amount of metal in the patient's body.

[0008] To achieve the above object, the present application adopts the following technical scheme:

[0009] The medical suturing device comprises a wire collector assembly and a wire pusher assembly, wherein the wire collector assembly comprises a wire collector body and two wire collector needles arranged on the wire collector body; the wire pusher assembly comprises a wire pusher body connected with the wire collector body and two traction needles arranged on the wire pusher body, and the two traction needles are respectively used for fixing two ends of a suture.

[0010] Optionally, the wire collector body comprises a lower base, a rear base and two wire collector blocks; a limiting hole is arranged on the lower base, and the wire pusher body is at least partially arranged in the limiting hole; one wire collector needle is arranged on each wire collector block; the two wire collector blocks are fixedly connected with the lower base; the rear base is fixedly connected with the wire collector blocks, and a first connecting part is arranged on the rear base; the first connecting part is connected with a first guide wire, and the first guide wire is used for driving the wire collector assembly.

[0011] Optionally, an installation groove is arranged on the wire collector block, and through holes are arranged on two opposite side walls of the installation groove; one end of the wire collector needle is connected with a rotating shaft, and the rotating shaft is rotationally connected with the through holes on the side walls of the installation groove.

[0012] Optionally, a limiting groove is arranged on the lower base, and at least part of the wire pusher body is arranged in the limiting groove, and the wire pusher body can slide relative to the limiting groove.

[0013] Optionally, the wire pusher body comprises a wire pusher rod and a fixed block; the wire pusher rod is movably connected with the wire collector body; support blocks are arranged on opposite sides of a first end of the wire pusher rod; the traction needles are arranged in one-to-one correspondence with the support blocks; a second connecting part is arranged on a second end of the wire pusher rod; the second connecting part is connected with a second guide wire, and the second guide wire is used for driving the wire pusher assembly; the fixed block is fixedly connected with the support blocks, and the traction needles are fixed between the support blocks and the fixed block.

[0014] Optionally, a limiting part is arranged on the second end of the wire pusher rod, and the limiting part can prevent the wire pusher rod from slipping off the wire collector body.

[0015] Optionally, the push wire rod is provided with a wire placing groove along the length direction of the push wire rod, and the wire placing groove is used for placing the suture.

[0016] Optionally, a plurality of hooks are arranged on the traction needle, and the end of the suture is configured as a wire ring, and the hooks are used for fixing the end wire ring of the suture.

[0017] Optionally, the shape of the wire collecting main body is cylindrical, the wire collecting needle comprises a half ring part arranged outside the wire collecting main body and wire collecting parts arranged at both ends of the half ring part, and the wire collecting parts are arranged on the inside of the wire collecting main body.

[0018] Optionally, the cross section of the traction needle is arc-shaped to form a space for the wire collecting needle, and the end of the traction needle arranged to be inclined through the target tissue.

[0019] Beneficial effects:

[0020] The medical suture device provided by the application firstly fixes the two ends of the suture on two traction needles respectively, and then transports the wire collector assembly and the push wire assembly to the right atrium along the femoral vein and the inferior vena cava; secondly, the push wire main body is moved away from the wire collecting main body, so that the suture and the traction needle pass through the foramen ovale to reach the left atrium with the push wire main body; thirdly, the push wire main body is moved towards the wire collecting main body and drives the traction needle to penetrate the atrial septum, so that the two ends of the suture are respectively taken from the left atrium to the right atrium by the two traction needles and respectively connected with the two wire collecting needles; finally, the wire collector assembly and the push wire assembly are withdrawn from the body, so that the two ends of the suture are taken out of the body by the two wire collecting needles, the suture is knotted outside the body, and the knotted knot is pushed towards the foramen ovale to suture the foramen ovale, so that the foramen ovale is completely closed. The foramen ovale is occluded by suture, which can effectively avoid the implantation of a large amount of metal in the patient's body, thereby reducing the risk of complications. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the medical suture device provided by the first embodiment of the application;

[0022] Figure 2 is a structural schematic diagram of the wire collecting main body and the push wire main body arranged on both sides of the atrial septum provided by the first embodiment of the application;

[0023] Figure 3 is a structural schematic diagram of the push wire assembly penetrating the atrial septum provided by the first embodiment of the application;

[0024] Figure 4 is a schematic diagram of the suture sutured foramen ovale provided by the first embodiment of the application;

[0025] Figure 5is a perspective view of the take-up assembly according to the first embodiment of the present application;

[0026] Figure 6 is another perspective view of the take-up assembly according to the first embodiment of the present application;

[0027] Figure 7 is a structural view of the take-up block according to the first embodiment of the present application;

[0028] Figure 8 is a structural view of the take-up needle according to the first embodiment of the present application;

[0029] Figure 9 is a structural view of the traction needle according to the first embodiment of the present application;

[0030] Figure 10 is a perspective view of the pusher assembly according to the first embodiment of the present application;

[0031] Figure 11 is another perspective view of the pusher assembly according to the first embodiment of the present application;

[0032] Figure 12 is a structural view of the medical suturing device according to the second embodiment of the present application.

[0033] in the figure:

[0034] 100, take-up assembly; 110, take-up body; 111, lower base; 112, take-up block; 1121, mounting groove; 1122, first side wall; 1123, accommodation portion; 1124, through hole; 1125, first fixing hole; 113, rear base; 1131, first connecting portion; 114, limiting groove; 115, limiting hole; 116, first anchor bolt; 117, second anchor bolt; 120, take-up needle; 121, rotating shaft;

[0035] 200, pusher assembly; 210, pusher body; 211, pusher rod; 2111, support block; 2112, second connecting portion; 2113, limiting portion; 2114, wire placement groove; 212, fixing block; 220, traction needle; 221, through hole; 222, hook; 223, third fixing hole; 230, third anchor bolt;

[0036] 300, suturing thread; 400, atrial septum;

[0037] 511, groove; 512, fixing groove; 521, half-ring portion; 522, take-up portion. DETAILED DESCRIPTION

[0038] The application will be further described below in conjunction with the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not to be used to limit the scope of the application. In addition, it is to be understood that, for ease of description, only the parts related to the application are shown in the drawings.

[0039] In the description of the application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the present embodiment, the terms "up", "down", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] In the description of the application, when describing the device, "proximal end" refers to the direction towards the end of the device operated by the user outside the patient's body, and "distal end" refers to the direction towards the working end of the device at the treatment site and away from the user.

[0043] Example one

[0044] Reference Figures 1 to 4As shown, the present embodiment provides a medical suturing device, which comprises a thread collector assembly 100 and a thread pusher assembly 200, the thread collector assembly 100 comprises a thread collector main body 110 and two thread collector needles 120 arranged on the thread collector main body 110; the thread pusher assembly 200 comprises a thread pusher main body 210 connected with the thread collector main body 110 and two traction needles 220 arranged on the thread pusher main body 210, the two traction needles 220 are respectively used for fixing two ends of a suture thread 300; wherein, when the thread collector main body 110 and the thread pusher main body 210 are placed on both sides of a target tissue, for example, both sides of an atrial septum 400, the thread pusher main body 210 can be moved towards the thread collector main body 110 and drive the two traction needles 220 and the suture thread 300 to penetrate the target tissue, and the two ends of the suture thread 300 can be respectively clamped with the two thread collector needles 120 after penetrating the target tissue.

[0045] In the present embodiment, first, the two ends of the suture thread 300 are respectively fixed on the two traction needles 220, and the thread collector assembly 100 and the thread pusher assembly 200 are delivered along the femoral vein, the inferior vena cava to the right atrium; second, the thread pusher main body 210 is moved away from the thread collector main body 110, so that the suture thread 300 and the traction needle 220 pass through the foramen ovale to reach the left atrium with the thread pusher main body 210; third, the thread pusher main body 210 is moved towards the thread collector main body 110 and drives the traction needle 220 to penetrate the atrial septum 400, so that the two ends of the suture thread 300 are respectively taken from the left atrium to the right atrium by the two traction needles 220 and are respectively clamped with the two thread collector needles 120; finally, the thread collector assembly 100 and the thread pusher assembly 200 are withdrawn from the body, so that the two thread collector needles 120 take the two ends of the suture thread 300 out of the body, the suture thread 300 is knotted outside the body and the knotted knot is pushed towards the foramen ovale to suture the foramen ovale, so that the foramen ovale is completely closed, the foramen ovale is occluded by suturing, which can effectively avoid implanting a large amount of metal in the patient's body, thereby reducing the risk of complications.

[0046] Specifically, the specific manner of delivering the line receiver assembly 100 to the right atrium and the line pusher assembly 200 to the left atrium is as follows: first, the catheter is delivered along the femoral vein, inferior vena cava to the right atrium (the catheter is not shown in the figure), and passes through the foramen ovale to the left atrium, the line receiver assembly 100 is connected with the first guide wire (the first guide wire is not shown in the figure), the line pusher assembly 200 and the second guide wire are connected (the second guide wire is not shown in the figure), and the line receiver assembly 100 and the line pusher assembly 200 are placed in the catheter; then, the line receiver assembly 100 and the line pusher assembly 200 are respectively pushed by the first guide wire and the second guide wire to be delivered to the body along the catheter, when the end of the line pusher assembly 200 towards the left atrium is exposed in the catheter, the line pusher body 210 is moved by the second guide wire pushing the line receiver body 110 backwards, so that the suture 300 and the traction needle 220 are placed in the left atrium with the line pusher body 210; finally, the catheter is withdrawn to the right atrium and the line receiver assembly 100 is pushed out of the catheter by the first guide wire, so that the line receiver assembly 100 is placed in the right atrium.

[0047] Specifically, the suture 300 can be silk thread, cotton thread, prolene suture 300, nylon, metal wire or other material suture, which is not limited here.

[0048] Further, the end of the suture 300 is configured as a wire loop to facilitate the fixation of the end of the suture 300 to the traction needle 220, and to facilitate the clamping of the end of the suture 300 to the line receiver needle 120. Preferably, the suture 300 is an integrally formed closed loop, and of course, the suture 300 can also be in other forms, which is not limited here.

[0049] In this embodiment, referring to Fig. 1, the line receiver assembly 100 includes a line receiver body 110 and a line pusher body 210, the line receiver body 110 is connected with the line pusher body 210, and the line pusher body 210 is connected with the traction needle 220. Figures 5 to 6 As shown in the figure, the line receiver body 110 includes a lower base 111, two line receiver blocks 112, and a rear base 113, each of the line receiver blocks 112 is provided with a line receiver needle 120, and the two line receiver blocks 112 are fixedly connected with the lower base 111; the rear base 113 is fixedly connected with the line receiver blocks 112, and the rear base 113 is provided with a first connecting portion 1131, which can be connected with the first guide wire, and the first guide wire is used to drive the line receiver assembly 100. In this embodiment, the rear base 113 is pushed in the catheter by the first guide wire, thereby driving the entire line receiver body 110 to move in the catheter. In addition, the line receiver body 110 is designed in blocks, which is convenient for processing and assembling, and the connection mode of the line pusher body 210 with the line receiver body 110 and the connection mode of the line receiver body 110 with the second guide wire are simple.

[0050] Specifically, the lower base 111 and the take-up block 112 are fixed by the first anchor bolt 116. Specifically, the two edges opposite to each other on one side of the lower base 111 are each provided with at least one first positioning hole, and the take-up block 112 is provided with a first fixing hole 1125 corresponding to the first positioning hole, and the take-up block 112 is fixed to the lower base 111 by the first anchor bolt 116 penetrating the first positioning hole and the first fixing hole 1125.

[0051] Specifically, the rear base 113 and the take-up block 112 are fixed by the second anchor bolt 117. Specifically, the two edges opposite to each other on one side of the rear base 113 are each provided with at least one second positioning hole, and the take-up block 112 is provided with a second fixing hole corresponding to the second positioning hole, and the take-up block 112 is fixedly connected with the rear base 113 by the second anchor bolt 117 penetrating the second positioning hole and the second fixing hole.

[0052] Specifically, the lower base 111 and the rear base 113 are vertically arranged, and are arranged on one side edge of the lower base 111.

[0053] Specifically, the first connecting portion 1131 is arranged on the side of the rear base 113 away from the take-up block 112.

[0054] Specifically, the shape of the first connecting portion 1131 can be a semicircular ring shape. Of course, the shape of the first connecting portion 1131 can also be other shapes, which are not limited here. Further, one end of the first guide wire is provided with a first buckle matched with the first connecting portion 1131, and the specific structure of the first buckle is not limited.

[0055] In this embodiment, the lower base 111 is provided with a limiting groove 114, and at least part of the push wire body 210 is arranged in the limiting groove 114, and the push wire body 210 can slide relative to the limiting groove 114. Specifically, the lower base 111 and the two take-up blocks 112 enclose the limiting groove 114, which can limit the movement direction of the push wire body 210 relative to the take-up body 110, so that the push wire body 210 moves in the required direction.

[0056] Further, the lower base 111 is further provided with a limiting hole 115, and the push wire body 210 is at least partially arranged in the limiting hole 115. Specifically, the limiting hole 115 and the limiting groove 114 are arranged between the lower base 111 and the rear base 113, and cooperate with the push wire body 210 to prevent the push wire body 210 from being separated from the take-up body 110.

[0057] Specifically, with reference to Figures 7 to 8As shown, the take-up block 112 is provided with a mounting groove 1121 which penetrates in a direction perpendicular to the lower base 111. The two opposite side walls of the mounting groove 1121 have through holes 1124, one end of the take-up needle 120 is connected with a rotating shaft 121 which is rotatably connected with the through holes 1124 on the side walls of the mounting groove 1121. The first side wall 1122 of the mounting groove 1121 can stop the take-up needle 120 so as to make the take-up needle 120 clamped with the end of the suture 300. In the embodiment, after the pusher body 210 moves towards the take-up body 110 and drives the traction needle 220 to penetrate through the atrial septum 400, the pusher body 210 continues to move towards the take-up body 110, when the take-up needle 120 contacts with the end of the suture 300, the take-up needle 120 is forced to rotate away from the end of the suture 300, when the end of the suture 300 is separated from the take-up needle 120, the take-up needle 120 rotates towards the first side wall 1122 due to the gravity, and then the take-up needle 120 is placed in the end loop of the suture 300, the first side wall 1122 of the mounting groove 1121 stops the take-up needle 120 so as to make the take-up needle 120 clamped with the end loop of the suture 300, and then the end of the suture 300 can be taken out of the body by pulling the take-up body 110 through the first guide wire.

[0058] Preferably, the rotating shaft 121 and the through hole 1124 can be in a shaft-hole gap fit. Further, the through hole 1124 is arranged close to the edge of the first side wall 1122.

[0059] Specifically, the take-up needle 120 can be a straight needle or a curved needle, or other shaped needle, which is not limited here.

[0060] Further, the take-up block 112 is provided with a space-providing portion 1123 at a position corresponding to the mounting groove 1121, so as to place the traction needle 220 and the end loop of the suture 300 on the traction needle 220 below the mounting groove 1121.

[0061] Further, the mounting groove 1121 can be square or other shape, which is not limited here.

[0062] In the embodiment, the traction needle 220 is a straight needle. Figure 9As shown, the pulling needle 220 is provided with a through hole 221. In this embodiment, after the pushing wire body 210 moves towards the collecting wire body 110 and drives the pulling needle 220 to penetrate the atrial septum 400, the pushing wire body 210 continues to move towards the collecting wire body 110, and when the collecting needle 120 contacts the end of the pulling needle 220, the collecting needle 120 is forced to rotate away from the end of the suture 300, thereby causing the collecting needle 120 to sweep across the end loop of the suture 300. When the collecting needle 120 corresponds to the through hole 221, the collecting needle 120 rotates towards the first side wall 1122 due to the action of gravity, and then the collecting needle 120 is placed in the through hole 221 and the end loop of the suture 300. The pushing wire body 210 moves away from the collecting wire body 110, and the collecting needle 120 is deflected under the action of the inner side wall of the through hole 221. The first side wall 1122 of the mounting groove 1121 stops the collecting needle 120 so that the end of the collecting needle 120 abuts against the side of the hook 222 of the pulling needle 220 and maintains a certain contact force, thereby enabling the collecting needle 120 to drive the end loop of the suture 300 to detach from the pulling needle 220, and the collecting needle 120 clamps the end loop of the suture 300. Thus, the end of the suture 300 can be brought out of the body by pulling the collecting wire body 110 through the first guide wire.

[0063] Specifically, the pulling needle 220 is further provided with a plurality of hooks 222, and the hooks 222 are used to fix the end of the suture 300, and the plurality of hooks 222 can expand the end loop of the suture 300.

[0064] Preferably, the hooks 222 are provided with two, and are arranged on the opposite two side edges of the pulling needle 220.

[0065] Specifically, the end of the pulling needle 220 for penetrating the target tissue is triangular in shape, which facilitates the penetration of the target tissue.

[0066] In this embodiment, with reference to Figures 10 to 11As shown, the push wire body 210 comprises a push wire rod 211 and a fixed block 212, the push wire rod 211 is movably connected with the take-up wire body 110, and opposite sides of a first end of the push wire rod 211 are provided with support blocks 2111, the support blocks 2111 extend towards the take-up wire assembly 100, and the traction needles 220 are arranged in one-to-one correspondence with the support blocks 2111, and a second end of the push wire rod 211 is provided with a second connecting portion 2112, the second connecting portion 2112 can be connected with a second guide wire for driving the push wire assembly 200; the fixed block 212 is fixedly connected with the support blocks 2111, and the traction needles 220 are fixed between the support blocks 2111 and the fixed block 212. Specifically, the first end of the push wire rod 211 is the distal end thereof, and the second end of the push wire rod 211 is the proximal end thereof. In the embodiment, the push wire rod 211 is pushed in the catheter by the second guide wire, thereby driving the entire push wire body 210 to move in the catheter, and the connection mode of the push wire body 210 and the second guide wire is simple. In addition, the traction needles 220 are fixed between the push wire rod 211 and the fixed block 212, facilitating assembly.

[0067] Specifically, the push wire rod 211 extends along the limiting groove 114, and the proximal end of the push wire rod 211 is arranged to pass out of the limiting hole 115, and the push wire rod 211 can slide relative to the limiting groove 114 and the limiting hole 115. In the embodiment, the cooperation mode of the push wire rod 211 and the limiting hole 115 can be a shaft hole gap cooperation, facilitating relative mechanical movement between the take-up wire assembly 100 and the push wire assembly 200.

[0068] Specifically, the traction needles 220 are fixed between the support blocks 2111 and the fixed block 212 by the third anchor bolt 230. Specifically, the support blocks 2111 are provided with at least one third positioning hole, the fixed block 212 is provided with an anchor hole arranged in one-to-one correspondence with the third positioning hole, the traction needles 220 are provided with a third fixing hole 223 arranged in one-to-one correspondence with the third positioning hole, and the third anchor bolt 230 is sequentially arranged in the anchor hole, the third fixing hole 223 and the third positioning hole to fix the traction needles 220 between the support blocks 2111 and the fixed block 212.

[0069] Specifically, the second connecting portion 2112 can be in the shape of a semicircular ring. Of course, the shape of the second connecting portion 2112 can also be other shapes, which are not limited here. Further, one end of the second guide wire is provided with a second buckle matched with the second connecting portion 2112, and the specific structure of the second buckle is not limited.

[0070] Specifically, the second end of the push wire rod 211 is provided with a limiting part 2113, which can prevent the push wire rod 211 from slipping off the take-up body 110. Further, the limiting part 2113 is configured as a blocking pin. Specifically, a through hole is provided on the side wall of the second end of the push wire rod 211, the blocking pin is inserted into the through hole, and the two ends of the blocking pin protrude out of the through hole. With the cooperation of the blocking pin and the rear base 113, the push wire rod 211 can be effectively prevented from slipping off the take-up body 110.

[0071] Specifically, the push wire rod 211 is provided with a wire placing groove 2114 along its length direction, which is used to place the suture 300. In this embodiment, placing the suture 300 in the wire placing groove 2114 can limit the position of the suture 300 relative to the push wire rod 211, preventing the suture 300 from being entangled with other components.

[0072] Specifically, the method of using the medical suture device of the present application includes the following steps:

[0073] S100, fixing the suture 300 on the push wire body 210, connecting the first guide wire with the take-up body 110, and connecting the second guide wire with the push wire body 210.

[0074] Specifically, the end of the suture 300 is fixed on the hook 222, so that the end of the suture can be expanded, and the suture 300 is placed in the wire placing groove 2114 of the push wire rod 211.

[0075] Specifically, the first buckle is connected with the first connecting part 1131 to connect the first guide wire with the take-up body 110.

[0076] Specifically, the second buckle is connected with the second connecting part 2112 to connect the second guide wire with the push wire body 210.

[0077] S200, inserting the catheter along the femoral vein, inferior vena cava to the right atrium, and then through the foramen ovale to the left atrium.

[0078] Specifically, during the operation, the skin around the right femoral vein is first anesthetized, the catheter (not shown in the figure) is inserted into the right femoral vein, the guide wire is inserted into the catheter, and then the guide wire is inserted along the femoral vein, inferior vena cava to the right atrium, and then through the foramen ovale to the left atrium (the guide wire is not shown in the figure, and the whole process needs to be completed under the guidance of an X-ray imaging instrument). The catheter is inserted along the guide wire, and the catheter reaches the right atrium. After the contrast agent is injected to confirm the position of the foramen ovale, the guide wire is withdrawn after the catheter passes through the foramen ovale.

[0079] S300, placing the push wire body 210 and the take-up body 110 into the catheter, and placing the push wire body 210 and the take-up body 110 on both sides of the atrial septum 400, respectively.

[0080] Specifically, after the push wire body 210 and the take-up body 110 are placed into the catheter, the take-up assembly 100 and the push wire assembly 200 are pushed along the catheter by the first guide wire and the second guide wire respectively, and the push wire assembly 200 is exposed in the catheter when the end of the push wire assembly 200 towards the left atrium is exposed, and the push wire body 210 is moved by the second guide wire against the take-up body 110, so that the suture 300 and the traction needle 220 are placed in the left atrium with the push wire body 210.

[0081] Further, the catheter is withdrawn to the right atrium, and the take-up assembly 100 is pushed out of the catheter by the first guide wire, so that the take-up assembly 100 is placed in the right atrium.

[0082] S400, the push wire body 210 is moved towards the take-up body 110 and the traction needle 220 penetrates the atrial septum 400, so that the two ends of the suture 300 are respectively taken out of the left atrium by the two traction needles 220 and are respectively clamped with the two take-up needles 120, and the ends of the suture 300 are taken out of the body.

[0083] Specifically, the push wire body 210 is moved towards the take-up body 110 by the second guide wire, and the traction needle 220 penetrates the atrial septum 400.

[0084] Further, the second guide wire pulls the push wire body 210 to continue moving towards the take-up body 110, and when the take-up needle 120 contacts the end of the traction needle 220, the take-up needle 120 is forced to rotate away from the end of the suture 300, so that the take-up needle 120 sweeps across the end loop of the suture 300, and when the take-up needle 120 corresponds to the penetration hole 221, the take-up needle 120 rotates towards the first side wall 1122 due to the action of gravity, so that the take-up needle 120 is placed in the penetration hole 221 and the end loop of the suture 300, the push wire body 210 moves away from the take-up body 110, the take-up needle 120 is deflected under the action of the inner side wall of the penetration hole 221, and the first side wall 1122 of the mounting groove 1121 stops the take-up needle 120 so that the end of the take-up needle 120 abuts against the side of the hook 222 provided on the traction needle 220 and maintains a certain contact force, so that the take-up needle 120 can drive the end loop of the suture 300 to separate from the traction needle 220, and the take-up needle 120 clamps the end loop of the suture 300, so that the end of the suture 300 can be taken out of the body by pulling the take-up body 110 through the first guide wire. In addition, before the end of the suture 300 is taken out of the body, the traction needle 220 needs to be withdrawn to the left atrium by the push wire body 210 controlled by the second guide wire, and the traction needle 220 moves to the right atrium with the push wire body 210 through the foramen ovale.

[0085] S500, the two ends of the suture 300 are knotted, and the knotted knot is pushed into the body to adjust to completely close the foramen ovale, and the suture 300 is cut short.

[0086] Specifically, the two ends of the suture 300 are knotted, the knotted suture is pushed into the body by the thread cutter and adjusted to completely close the oval foramen (not shown in the figure), the suture 300 is cut short by the thread cutter, and the thread cutter and the catheter are withdrawn.

[0087] Specifically, the thread cutter is a prior art, which will not be described in detail here.

[0088] In this embodiment, the entire surgical procedure is simple to operate, the oval foramen is closed by suturing, the generation of atrial blood shunt is effectively prevented, and a large number of metal implants in the patient's body can be effectively avoided, thereby reducing the risk of complications.

[0089] Embodiment Two

[0090] The shapes of the take-up body 110 and the thread pushing body 210 in the medical suture device provided in this embodiment are different from those in Embodiment One. In this embodiment, referring to Figure 12 , the shape of the take-up body 110 is cylindrical, and the shape of the thread pushing body 210 is cylindrical.

[0091] Specifically, the thread pushing body 210 is provided with a groove 511 corresponding to each traction needle 220, and the traction needle 220 is arranged in the groove 511 to achieve positioning and installation of the traction needle 220. Further, at least one mounting hole is arranged in the traction needle 220 and the groove 511, and a screwing piece is arranged in the mounting hole of the traction needle 220 and screwed with the mounting hole in the groove 511 to fix the traction needle 220 in the groove 511.

[0092] Specifically, the opposite side edges of the traction needle 220 are provided with a fixing groove 512 for fixing the end loop of the suture 300, and the opening of the fixing groove 512 faces the end of the traction needle 220 for penetrating the target tissue, so as to facilitate the take-up needle 120 to drive the end loop of the suture 300 to escape from the fixing groove 512.

[0093] Specifically, the cross section of the traction needle 220 is arc-shaped, which forms a space for the take-up needle 120, effectively ensuring that the take-up needle 120 enters the end loop of the suture 300, so that the take-up needle 120 can drive the end loop of the suture 300 to escape from the traction needle 220, and the take-up needle 120 can be clamped in the end loop of the suture 300, so that the end of the suture 300 can be taken out of the body by pulling back the take-up body 110 through the first guide wire.

[0094] Further, the end of the traction needle 220 for penetrating the target tissue is inclined, so as to facilitate the traction needle 220 to penetrate the target tissue.

[0095] Specifically, the take-up needle 120 is an integral structure formed by bending a metal wire, and includes a half-ring portion 521 arranged outside the take-up main body 110 and take-up portions 522 arranged at both ends of the half-ring portion 521. The take-up portions 522 are arranged inside the take-up main body 110 and correspond to the traction needles 220. In this embodiment, the half-ring portion 521 cooperates with the take-up main body 110 to limit the rotation angle of the take-up needle 120, so that the take-up needle 120 can enter the end loop of the suture 300, drive the end loop of the suture 300 to separate from the traction needle 220, and enable the take-up needle 120 to clamp the end loop of the suture 300. The end of the suture 300 can be pulled out of the body by pulling the take-up main body 110. In addition, the half-ring portion 521 is arranged outside the take-up main body 110 to avoid interference with the second guide wire connected between the take-up main body 110 and the push wire main body 210, and facilitate movement of the push wire main body 210 by the second guide wire.

[0096] The medical suturing device provided in this embodiment has the same structure as that of the first embodiment, and will not be described in detail here.

[0097] Compared with the first embodiment, the medical suturing device of this embodiment has a smaller size, is easier to operate in the catheter during the entire delivery process, is less likely to be blocked, and improves the accuracy of surgical operation.

[0098] Of course, the take-up main body 110 and the push wire main body 210 can also be arranged in other shapes, which will not be limited here.

[0099] Obviously, the above embodiments of the present application are only examples for clear illustration of the present application, and are not a limitation on the embodiments of the present application. Those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principles of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A medical suturing device, characterized by, The application relates to a suture device, which comprises a winding device and a pushing device. The winding device comprises a winding main body and two winding needles arranged on the winding main body; the winding main body comprises a lower base and two winding blocks fixedly connected with the lower base, and one winding needle is arranged on each winding block; a mounting groove is arranged on each winding block, and through holes are arranged on two opposite side walls of the mounting groove; one end of each winding needle is connected with a rotating shaft, and the rotating shaft is rotatably connected with the through holes on the side walls of the mounting groove. The pushing device comprises a pushing main body connected with the winding main body and two traction needles arranged on the pushing main body; the two traction needles are used for fixing two ends of a suture respectively, and through holes are arranged on the traction needles; wherein, when the winding main body and the pushing main body are arranged on two sides of a target tissue, the pushing main body can move towards the winding main body and drive the two traction needles and the suture to penetrate the target tissue, and the two ends of the suture can be clamped with the two winding needles respectively after penetrating the target tissue.

2. The medical stapler according to claim 1, wherein A limiting hole is arranged on the lower base, and the pushing main body is arranged at least partially in the limiting hole. The winding main body further comprises a rear base fixedly connected with the winding blocks; a first connecting part is arranged on the rear base and connected with a first guide wire; and the first guide wire is used for driving the winding device.

3. The medical stapler according to claim 2, wherein A limiting groove is arranged on the lower base, and the pushing main body is arranged at least partially in the limiting groove and can slide relative to the limiting groove.

4. The medical stapler according to claim 1, wherein The pushing main body comprises: a pushing rod movably connected with the winding main body; support blocks are arranged on two opposite sides of a first end of the pushing rod; the traction needles are arranged in one-to-one correspondence with the support blocks; a second connecting part is arranged on a second end of the pushing rod and connected with a second guide wire; and the second guide wire is used for driving the pushing device. A fixed block (212) is fixedly connected with the support block (2111), and the traction needle (220) is fixed between the support block (2111) and the fixed block (212).

5. The medical stapler according to claim 4, wherein The second end of the push wire rod (211) is provided with a limiting portion (2113), which can prevent the push wire rod (211) from slipping off the take-up body (110).

6. The medical stapler according to claim 4, wherein The push wire rod (211) is provided with a wire placing groove (2114) along the length direction, which is used for placing the suture (300).

7. The medical stapler according to claim 1, wherein The traction needle (220) is provided with a plurality of hooks (222), and the end of the suture (300) is configured as a wire loop, and the hooks (222) are used for fixing the end wire loop of the suture (300).

8. The stapler according to claim 1, wherein, The cross section of the traction needle (220) is arc-shaped to form a space for the take-up needle (120), and the end of the traction needle (220) is obliquely arranged for penetrating the target tissue.

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