Suture device

Abstract

The embodiment of the present application provides a suturing device, comprising: a suturing part; a first pipeline and a second pipeline, the first pipeline is rotatably arranged in the lumen of the second pipeline, one end of the first pipeline passes through the second pipeline and is connected to the suturing part, when the first pipeline rotates in the second pipeline, it can drive the suturing part to rotate to adjust the angle of the suturing part; an operating part, used to operate the suturing part for suturing, the other end of the first pipeline passes through the second pipeline and is connected to the operating part. The suturing device according to the embodiment of the present application can meet special suturing requirements in some usage scenarios.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a suturing device. Background Art

[0002] Suturing devices have been widely used in surgical operations. They can reach biological tissues that need suturing (such as blood vessels, unclosed foramen ovale, etc.) through blood vessels, and clinicians can operate the suturing devices in vitro to complete suturing in vivo. Suturing devices in related art are difficult to meet suturing needs in some special usage scenarios. Summary of the invention

[0003] In view of the above problems, the present application is proposed to provide a suturing device that overcomes the above problems or at least partially solves the above problems.

[0004] According to a first aspect of an embodiment of the present application, a suturing device is provided, comprising: a suturing portion; a first pipeline and a second pipeline, wherein the first pipeline is rotatably arranged in a tube cavity of the second pipeline, one end of the first pipeline passes through the second pipeline and is connected to the suturing portion, and when the first pipeline rotates in the second pipeline, it can drive the suturing portion to rotate to adjust the angle of the suturing portion; an operating portion, used to operate the suturing portion for suturing, the operating portion being connected to one end of the first pipeline away from the suturing portion.

[0005] According to a second aspect of an embodiment of the present application, a suturing device is provided, comprising: a suturing portion, an extending portion and an operating portion; the suturing portion and the operating portion are respectively connected to two ends of the extending portion, and the operating portion is used to operate the suturing portion for suturing; the suturing portion comprises: a main body, the main body is formed with an inner cavity; a suture and a traction needle, which are arranged in the inner cavity of the main body; a thread holding member, the thread holding member is rotatably connected to the main body so that the thread holding member can switch between an expanded state and a contracted state under the operation of the operating portion, and a thread locking member is arranged on the thread holding member, and the suture can pass through the thread locking member; the thread holding member can be held against one side of the tissue to be sutured in the expanded state, and the traction needle can pass through the tissue to be sutured from the other side of the tissue to be sutured to reach the thread holding member under the operation of the operating portion, and pull the thread locking member to separate from the thread holding member; the thread locking member can pass through the tissue to be sutured under the traction of the traction needle, and be locked on the other side of the tissue to be sutured after the traction needle finishes traction.

[0006] According to a third aspect of an embodiment of the present application, a suturing device is provided, comprising: a suturing portion, an extending portion, and an operating portion, wherein the suturing portion and the operating portion are connected to the extending portion, and the operating portion is used to operate the suturing portion to perform suturing; the suturing portion comprises:

[0007] A body, which is connected to one end of the extension portion, and is formed with an inner cavity; a suture, which is arranged in the inner cavity of the body; a thread holding member, which is rotatably connected to the body so that the thread holding member can switch between an expanded state and a contracted state under the operation of the operating portion, and the suture can pass through the inner cavity of the body and be connected to the thread holding member; a tubular member, which is arranged on the outside of the extension portion and is slidably connected to the extension portion so that the tubular member can move toward or away from the body under the operation of the operating portion, and an annular cavity is formed in the tube wall of the tubular member; a traction needle, which is arranged in the annular cavity; when the thread holding member is in the expanded state, the traction needle can pass through the annular cavity of the tubular member under the operation of the operating portion to reach the thread holding member and pull the suture, so that the suture can detach from the thread holding member and follow the movement of the traction needle for suturing.

[0008] According to a fourth aspect of an embodiment of the present application, a suturing device is provided, comprising: a suturing part, an extension part and an operating part, the suturing part and the operating part are connected to the extension part, and the operating part is used to operate the suturing part for suturing; the suturing part comprises: a body and a connecting rod, the body is detachably connected to the extension part through the connecting rod, and an annular gap is formed between the body and the extension part; a suture, the suture is arranged in the inner cavity of the body; a thread holding piece, the thread holding piece is rotatably connected to the body, so that the thread holding piece can switch between an expanded state and a contracted state under the operation of the operating part, and the suture can pass through the inner cavity of the body and be connected to the thread holding piece; a traction needle, the traction needle is arranged in the inner cavity of the extension part; when the thread holding piece is in the expanded state, the traction needle can pass through the inner cavity of the extension part to reach the thread holding piece and pull the suture under the operation of the operating part, so that the suture can detach from the thread holding piece and follow the movement of the traction needle for suturing.

[0009] The suturing device according to the embodiment of the present application can meet special suturing requirements in some usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of a suturing device according to an embodiment of the present application;

[0011] Figure 2 is a schematic diagram of a suture portion according to an embodiment of the present application;

[0012] Figure 3 is a schematic diagram of an indicator according to an embodiment of the present application;

[0013] Figure 4 A schematic diagram of a first stopper and a second stopper according to an embodiment of the present application;

[0014] Figure 5 is a schematic diagram of a suture portion according to another embodiment of the present application;

[0015] Figure 6a-6e A schematic diagram of a suturing process of a suturing device according to an embodiment of the present application;

[0016] Figure 7a-Figure 7b is a schematic diagram of a wire holding portion according to an embodiment of the present application;

[0017] Figure 8 is a schematic diagram of a suturing device according to another embodiment of the present application;

[0018] Figure 9a-9c is a schematic diagram of a suturing process of a suturing device according to another embodiment of the present application;

[0019] Figure 10a-Figure 10b This is a schematic diagram of a suturing effect of a suturing device according to another embodiment of the present application;

[0020] Figure 11a-Figure 11c is a schematic diagram of a thread locking member according to an embodiment of the present application;

[0021] Fig.12 is a schematic diagram of a traction needle according to an embodiment of the present application;

[0022] Fig.13 is a schematic diagram of a suturing device according to yet another embodiment of the present application;

[0023] Figure 14a-14b This is a schematic diagram of a suturing process of a suturing device according to yet another embodiment of the present application;

[0024] Fig.15 It is a schematic diagram of a suturing device according to another embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiment is one embodiment of the present application, not all embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should be the usual meanings understood by people with general skills in the field to which this application belongs. If the full text involves descriptions such as "first" and "second", the "first" and "second" descriptions are only used to distinguish similar objects, and cannot be understood as indicating or implying their relative importance, sequence, or implicitly indicating the number of technical features indicated. It should be understood that the data described by "first" and "second" can be interchangeable under appropriate circumstances. If "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes Solution A, or Solution B, or a solution that satisfies both A and B.

[0027] According to an embodiment of the present application, a suturing device is provided, referring to Figure 1 and Figure 2 ,include:

[0028] A suture portion 10; a first pipeline 21 and a second pipeline 22, wherein the first pipeline 21 is rotatably arranged in the lumen of the second pipeline 22, one end of the first pipeline 21 passes through the second pipeline 22 and is connected to the suture portion 10, and when the first pipeline 21 rotates in the second pipeline 22, it can drive the suture portion 10 to rotate to adjust the angle of the suture portion 10; an operating portion 30, used to operate the suture portion 10 for suturing, the other end of the first pipeline 21 passes through the second pipeline 22 and is connected to the operating portion 30.

[0029] The suturing part 10 and the operating part 30 can be any suturing part and operating part used in any suturing device known in the art, and this is not specifically limited in the present application. The suturing part 10 and the operating part 30 are respectively arranged at both ends of the first pipeline 21, and the operating part 30 is used to operate the suturing part 10. Usually, a plurality of operating parts are arranged on the operating part 30, and these operating parts can be connected to the parts on the suturing part 10 via a transmission structure to operate them, and these transmission structures can be accommodated in the lumen of the first pipeline 21. In actual use, the suturing part 10 can be delivered to the tissue that needs to be sutured in the patient's body through the blood vessels at the skin opening, and the operating part 30 is left outside the patient's body. The operator can operate the suturing part 10 through the operating part 30 to complete the suturing.

[0030] The first pipeline 21 is rotatably disposed in the second pipeline 22, and its two ends are respectively passed through the two ends of the second pipeline 22, that is, the first pipeline 21 and the second pipeline 22 actually form a sleeve-like structure. When the first pipeline 21 rotates in the second pipeline 22, it can drive the suture part 10 to rotate, so that the angle of the suture part 10 can be adjusted so that the suture can be punctured to the desired position during suturing.

[0031] It is understandable that during the actual use of the suturing device, the first pipeline 21 and the second pipeline 22 will be in the blood vessel. In the related art, only the first pipeline 21 is usually provided. Although it can be rotated directly in the blood vessel, it may be subject to greater rotation resistance, which is not convenient for the operator to find a suitable position. At the same time, directly rotating the first pipeline 21 in the blood vessel will have the risk of damaging the blood vessel wall. In this embodiment, the first pipeline 21 can be rotated in the second pipeline 22. During the rotation of the first pipeline 21, the second pipeline 22 can remain stationary, which is equivalent to forming a barrier between the first pipeline 21 and the blood vessel wall, so that the resistance to the rotation of the first pipeline 21 is greatly reduced and there is no risk of damaging the blood vessel wall.

[0032] In some embodiments, a fixing structure may be provided at one end of the second tube 22 close to the operating portion, so that this end of the second tube 22 can be fixed to the patient's body surface to avoid accidental rotation of the second tube 22 during suturing.

[0033] In some embodiments, reference may still be made to Figure 1 The end of the second pipeline 22 close to the operating part 30 is provided with an indicator 221, and the indicator 221 is used to indicate the rotation angle of the first pipeline 21. By providing the indicator 221, the operator can more accurately control the rotation angle of the first pipeline 21, and thus can more accurately adjust the suture part 10. In addition, in some cases where the field of vision is not very clear, the indicator 221 can enable the operator to roughly estimate the current angle of the suture part 10 and the position to be punctured.

[0034] In some embodiments, reference Figure 3 The indicating portion 221 may be disc-shaped and provided with scales, and the first pipeline 21 is provided with an indicating point 211 near the indicating portion 221. Thus, the current angle of the suture portion 10 can be more accurately grasped according to the scale pointed to by the indicating point 211. In some embodiments, the indicating point 211 may correspond to the position where the traction needle on the suture portion 10 passes through, so that the current angle of the suture portion 10 and the position that can be pierced can be more intuitively obtained.

[0035] In some other embodiments, the indicating part 221 may also be arranged in other suitable manners. For example, the indicating part 221 may include a Hall sensor, and a magnetic ring may be arranged on the first pipeline 21. The Hall sensor may sense the current angle of the first pipeline 21 with the help of the magnetic ring.

[0036] In some embodiments, reference may still be made to Figure 1The second pipeline 22 is provided with a locking member 222, which can be operably abutted against the first pipeline 21 to prevent the first pipeline 21 from rotating in the second pipeline 22. In this embodiment, if it is determined that the suture portion is already at a suitable angle, the locking member 222 can be operated to lock the position of the first pipeline 21 to prevent the first pipeline 21 from rotating and causing the angle of the suture portion 10 to change during the operation of the suture portion 10 by the operator 30.

[0037] In some embodiments, reference Figure 4 The outer wall of the first tube 21 may be provided with a first stopper 212, and the inner wall of the second tube 22 may be provided with a second stopper 223, and the second stopper 223 can stop the first stopper 212 to limit the range in which the first tube 21 can rotate. It can be understood that when suturing some tissues, the first tube 21 may not be able to pierce the tissue when it rotates to certain angles. For this reason, the rotation of the first tube 21 at these angles can be limited to improve the efficiency of position adjustment.

[0038] The first stopper 212 and the second stopper 223 can be block structures protruding toward the lumen of the second pipeline 22, or protrusions of other suitable shapes. When the first pipeline 21 rotates to a certain angle in a certain direction, the first stopper 212 and the second stopper 223 will block each other, so that the first pipeline 21 cannot continue to rotate along this angle.

[0039] In some embodiments, two second stoppers 223 may be provided so that the first pipeline 21 can only rotate within an angular range between the two second stoppers 223 .

[0040] In some embodiments, the second stopper 223 can be slidably connected to the second pipeline 22, so that the rotatable range of the first pipeline 21 can be changed by adjusting the position of the second stopper 223 in the second pipeline 22 to meet the needs of different procedures and types of operations.

[0041] In some embodiments, the side of the first stop member 212 facing the second stop member 223 can be set as a slope, so that when the first stop member 212 is rotated to the position of the second stop member 223, it is not only stopped but also fixed by the second stop member 223. In such an embodiment, the second stop member 223 can be pre-set at a desired angle, so that when the operator rotates the first pipeline 21 until it cannot be rotated, it means that it has been rotated to the desired angle, and at this time the first pipeline 21 has been fixed, and the operation can be started directly without the need to use the locking member 222 described above to lock it, thereby improving the efficiency of the operation.

[0042] In some embodiments, the suture portion 10 may be configured to enter the second tube 22 , and the first tube 21 may be configured to move axially along the second tube 22 , so that the first tube 21 and the suture portion 10 can be removed from the second tube 22 .

[0043] It can be understood that the number of stitches that can be sutured by the suture part 10 each time is limited. If a large number of stitches need to be sutured, the suture part 10 may need to be taken out and replaced. In the present embodiment, the first pipeline 21 and the suture part 10 can be removed from the second pipeline 22. Thus, when the suture part 10 needs to be replaced, the first pipeline 21 can be directly pulled to allow the suture part 10 to reach the body through the second pipeline 22, while the second pipeline 22 can still remain in the body. Thus, after the replacement of the suture part 10 is completed, it can be directly transported back into the body through the second pipeline 22 without being transported via a guide wire, thereby improving the efficiency of suturing.

[0044] In some embodiments, the first pipeline 21 can be rotatably connected to the operating part 30, so that the operating part 30 does not need to rotate during the rotation of the first pipeline 21, so that the operator can hold the operating part 30 in a more comfortable posture to complete suturing at various angles.

[0045] In some embodiments, reference may still be made to Figure 1 and Figure 2 The suturing portion 10 may include: a main body 11, which is formed with an inner cavity; a suture 12 and a traction needle 13, which are arranged in the inner cavity of the main body 11; a thread holding piece 14, which is rotatably connected to the main body 11, so that the thread holding piece 14 can switch between an expanded state and a contracted state under the operation of the operating portion 30; the suture 12 can pass through the inner cavity of the main body 11 and be connected to the thread holding piece 14, and when the thread holding piece 14 is in the expanded state, the traction needle 13 can pass through the inner cavity of the main body 11 under the operation of the operating portion 30 to reach the thread holding piece 14 and pull the suture 12, so that the suture 12 can be separated from the thread holding piece 14 and move with the traction needle 13 for suturing.

[0046] One end of the suture 12 can pass through the inner cavity of the body 11 and be connected to the thread holder 14. Figure 1 In the illustrated embodiment, the suture 12 can pass through the inner cavity of the main body 11 through the opening at the end of the main body 11. In some other embodiments, the suture 12 can also pass through the inner cavity of the main body 11 through the opening on the side of the main body 11. This setting method depends on the type of suture. Those skilled in the art can make settings according to actual suture needs, and no specific limitation is made to this.

[0047] Figure 1 The wire holding member 14 is shown in an unfolded state. Figure 2The figure shows the contracted state of the wire holding member 14. In the contracted state, the wire holding member 14 can be accommodated in the main body 11, so that the main body 11 can smoothly advance in the blood vessels and tissues. The wire holding member 14 can be rotated relative to the main body 11 in a direction away from the main body 11, thereby switching to an expanded state. In the expanded state, the wire holding member 14 can form a preset angle with the main body 11, and the preset angle can be set according to actual needs, or the angle between the wire holding member 14 and the main body 11 in the expanded state can be adjusted by the operating part 30, and there is no limitation on this.

[0048] The angle at which the traction needle 13 passes through the body 11 can be adapted to the angle between the thread holder 14 and the body 11 when the thread holder 14 is in the unfolded state, so that the traction needle 13 can reach the thread holder 14 and accurately pull the suture 12. Similarly, in some embodiments, the angle at which the traction needle 13 passes through the body 11 can be adjusted by the operating unit 30.

[0049] The suturing portion 10 may include a plurality of thread holders 14, or may include only one thread holder 14, and there is no specific limitation on this. The suture 12 is initially connected to the thread holder 14, and such a connection is releasable, that is, the suture 12 can leave the thread holder 14 under the action of an external force. When the thread holder 14 is in the unfolded state, the traction needle 13 can pass through the inner cavity of the body 11 to reach the position of the thread holder 14, and further establish a connection with the suture 12 connected to the thread holder 14, so as to pull the suture 12 away from the thread holder 14 to move, for example, to pull it through the tissue to be sutured, thereby completing the suturing action.

[0050] Those skilled in the art can adopt appropriate methods to establish the connection between the suture 12 and the thread holding member 14, as well as the connection between the suture 12 and the traction needle 13. For example, the thread holding member 14 can be provided with a groove, and the suture 12 can be pre-rolled into a lasso-like structure and set in the groove. The groove can be provided with a limiting protrusion to maintain the lasso-like structure to prevent the lasso-like structure from falling off from the groove without the action of external force. The tip of the traction needle 13 can form a barb-like structure, and the traction needle 13 can penetrate into the groove after reaching the thread holding member 14, and then the barb-like structure can hook the lasso-like structure to establish the connection between the traction needle 13 and the suture 12, so that the traction needle 13 can enable the suture 12 to leave the groove of the thread holding member 14 and move. Several other settings are also provided in the embodiments of the present application, which will be described in detail in the relevant parts below.

[0051] The number of traction needles 13 is usually adapted to the number of thread holders 14, that is, the thread holders 14 correspond to the traction needles 13 one by one, so as to facilitate the operation. In some embodiments, the traction needle 13 may also correspond to a plurality of thread holders 14, in which case the traction needle 13 may sequentially traction the suture 12 on the thread holders 14 to which it corresponds to complete the suturing, but this may require a more complicated operation method to enable the traction needle 13 to reach different thread holders 14.

[0052] In some embodiments, reference may still be made to Figure 1 The suture part 10 includes two thread holders 14, which are respectively arranged on both sides of the body 11. In such an embodiment, the two thread holders 14 can be connected to two sutures 12 respectively, so that a suture 12 can be inserted into two different tissues respectively. In some other embodiments, the two thread holders 14 can be connected to the two ends of a suture 12 respectively, so that two tissues can be connected using a suture 12. Those skilled in the art can make settings according to actual suture requirements, and no specific limitation is made to this.

[0053] In some embodiments, different marks are respectively provided at both ends of the suture 12. Different marks may refer to two marks that can be directly distinguished by naked eyes, for example, two different colors, two different symbols, etc. It can be understood that the suturing effect depends not only on the position of the suture, but also on the way of knotting. For this reason, different marks are respectively provided at both ends of the suture 12 in this embodiment, so that the operator can identify which part of the patient's body tissue the two ends of the suture pass through through different marks, and then can choose a suitable way to knot.

[0054] In some embodiments, the suture portion 10 includes a plurality of thread holders 14 disposed along the circumference of the body 11 . Figure 5 An embodiment in which four wire holders 14 are arranged (one of which is behind the body 11) is shown, and the four wire holders are arranged symmetrically. In some embodiments, the intervals between these wire holders 14 can be the same, and in some embodiments, they can also be different. Those skilled in the art can arrange them according to actual needs. In embodiments in which more wire holders 14 are arranged, such as 6 or 8 wire holders 14, a similar arrangement can also be used, which will not be repeated here.

[0055] In such an embodiment, a plurality of sutures 12 are also configured, wherein the two ends of each suture 12 are respectively connected to two symmetrically arranged thread holders 14, so that the sutures 12 can cross and press each other after suturing. In some embodiments, the two ends of each suture 12 can also be respectively connected to two adjacent thread holders 14, so that the sutures 12 can be roughly parallel to each other after suturing. In some embodiments, one end of each suture 12 can be connected to a thread holder 14, and the other end can be accommodated in the inner cavity of the body 11, so that the same number of sutures as the thread holders 14 can be inserted into the tissue. In some embodiments, the above-mentioned methods can also be used in combination to obtain more diverse suturing effects, and those skilled in the art can make arrangements according to actual conditions.

[0056] The ends of the plurality of sutures 12 are respectively provided with different marks. For example, if two sutures are configured, then the four ends of the two sutures 12 are respectively provided with different marks so that the operator can divide the four ends into two groups for knotting as needed.

[0057] In some embodiments, a gasket is provided in the middle of the suture 12, and the gasket can be accommodated in the inner cavity of the body 11. After the suture 12 passes through the tissue, the gasket can be pulled out of the inner cavity of the body 11 and covered on the tissue to obtain a better suturing effect.

[0058] Figure 6a-6e Taking the suturing of the foramen ovale as an example, a working mode of the suturing device is demonstrated. In this embodiment, two thread holders 14 and two corresponding traction needles 13 are provided, and the two ends of the suture 12 are respectively connected to the two thread holders 14. It should be noted that the following description is only used to demonstrate the working principle of the traction needle 13 and the thread holder 14, and does not mean that the working mode of the suturing device of the embodiment of the present application is limited to this. Those skilled in the art can achieve different types of suturing according to the working principle shown below by changing the position where the suture 12 passes through the body 11, the way the suture 12 is connected to the thread holder 14, the number of thread holders 14, etc.

[0059] The body 11 can partially pass through the gap of the oval foramen when the thread holder 14 is in a contracted state, so that the thread holder 14 is located at the left atrium (LA side in the figure), and the hole on the body 11 for the traction needle 13 to pass through is located at the right atrium (RA side in the figure). Figure 6aThe two thread holders 14 in the left atrium can be switched to the expanded state and respectively placed on the upper and lower free edges of the oval foramen. At this time, the operator can use the operating part 30 to operate the traction needle 13 to pass through the main body 11, and make the two traction needles 13 pierce the upper and lower free edges of the oval foramen respectively, and then reach the position of the corresponding thread holder 14 to establish a connection with the suture 12 on the thread holder 14.

[0060] Reference Figure 6b After the traction needle 13 is connected to the suture 12 on the thread holder 14, the operator can use the operating part 30 to retract the traction needle 13 into the inner cavity of the body 11. During the retraction of the traction needle 13, the suture 12 will be pulled through the two free edges above and below the oval foramen. In this embodiment, the two thread holders 14 are connected to the two ends of a suture 12, and the middle part of the suture 12 is received in the inner cavity of the body 11. After the traction needle 13 has been retracted into the inner cavity of the body 11, the two thread holders 14 can be switched to a retracted state, and then, referring to Figure 6c The body 11 can be retracted from the gap of the oval foramen and continue to retreat through the artery to leave the patient's body. At this time, under the action of the two free edges, the middle part of the suture 12 will be forced to move out of the inner cavity of the body 11 to the position shown in the figure, so that the two free edges are connected.

[0061] As described above, before suturing, the angle of the suturing portion 10 can be adjusted by rotating the first pipe 21 to obtain a better suturing effect. Figure 6d In the initial state, the two thread holders 14 may be respectively held at the positions shown by A1 and A2. After the first pipe 21 is rotated, the suture part 10 is rotated accordingly, so that the positions of the two thread holders 14 are adjusted to B1 and B2. It can be understood that if suturing is performed in the above-mentioned initial state, the suture 12 will be roughly located at the position of the line between A1 and A2, and if suturing is performed after adjustment, the suture 12 will be roughly located at the position of the line between B1 and B2. Compared with the initial state, the position of the suture 12 in the adjusted state can make the two free edges after suturing have a larger overlapping area, and the possibility of gaps appearing again is reduced.

[0062] Further, see Figure 6e After the above steps are completed, the suture part 10 can be removed and another suture 12 can be installed, and then the above steps are repeated to insert another suture 12 into the two free edges above and below the oval foramen, so that the two sutures 12 can be presented. Figure 6eIn some other embodiments, as described above, the suture section 10 may be provided with four thread holders 14, so that two sutures 12 can be passed through the two free edges at one time to obtain a cross effect (the rotation direction of the first pipeline 21 is opposite during the two suturing processes). Figure 6e The cross effect can be achieved without removing the suture 10 and reinstalling the suture 12.

[0063] The ends of the suture 12 may be provided with different marks, still referring to Figure 6e , where the two ends of one suture are marked a and b respectively, and the two ends of the other suture are marked c and d respectively, so that the operator can choose the appropriate knotting method, such as knotting in the form of a+b, c+d (tying end a with end b, and end c with end d), knotting in the form of a+d, b+c, knotting in the form of a+c, b+d, and so on.

[0064] Since the thickness of the free edge above the foramen ovale is different from that of the free edge below, the movement mode and degree of the free edge are different during the contraction and relaxation of the left and right atria, which may cause the already tied knot to become loose after being subjected to uneven force, and a gap will appear in the foramen ovale again. Therefore, preferably, the knot is tied in the manner of a+c or b+d, that is, two ends passing through the same free edge are selected for knotting, so as to avoid the above situation as much as possible. In the specific suturing process, the a and b ends of one suture and the c and d ends of another suture are all outside the patient's body. After the a and c ends are tied, the tied knot can be delivered into the patient's body by pulling the c and d ends, and then the c and d ends can be tied and delivered into the patient's body through a delivery device, such as a knot delivery device, etc. The technicians in this field can also choose other suitable methods to complete the knotting, which is not limited.

[0065] In some embodiments, reference Figure 7a and Figure 7b The thread holding member 14 may specifically include: an extension member 141, one end of which is rotatably connected to the main body 11; a fixing member 142, which is used to fix the suture 12, and the fixing member 142 is snap-connected with one end of the extension member 141 away from the main body 11, and the fixing member 142 can be detached from the extension member 141 and move with the traction needle 13 under the traction action of the traction needle 13.

[0066] The fixing member 142 is arranged at one end of the extension member 141 away from the main body 11. The specific location of the fixing member 142 can be determined according to the position of the extension member 141 when the wire holding member 14 is in the expanded state and the position reached by the traction needle 13 after passing through the main body 11, so that the traction needle 13 can reach the position of the fixing member 142 after passing through the inner cavity of the main body 11.

[0067] The fixing member 142 and the extension member 141 can be connected by a snap-fit ​​connection, and the connection can be disconnected under the action of a suitable external force. Therefore, when the traction needle 13 reaches the position of the fixing member 142, a connection can be established therewith. Then, when the traction needle 13 is retracted into the inner cavity of the main body 11, the fixing member 142 is disconnected from the extension member 141 under the action of an external force, and moves with the traction needle 13 to the inner cavity of the main body 11, thereby driving the suture 12 connected thereto to move together.

[0068] The above describes an implementation method in which the traction needle 13 pulls the suture 12 by hooking the lasso-like structure on the suture 12. However, since the suture 12 is more prone to deformation and position shifting, directly hooking it with the traction needle 13 may require more delicate operations and take a lot of time. The fixing piece 142 in this implementation is easier to be hooked by the traction needle 13, thereby improving the efficiency of the operation.

[0069] In some embodiments, the fixing member 142 may be provided with a first matching member 143, and the traction needle 13 may be formed with a second matching member 131. The first matching member 143 and the second matching member 131 can be matched and connected, so that the traction needle 13 can pull the fixing member 142 to move. In such an embodiment, the traction needle 13 and the fixing member 142 are provided with parts that can cooperate with each other, such as a protrusion and a groove, so that it is easier to establish a connection between the traction needle 13 and the fixing member 142, thereby improving the efficiency of the operation.

[0070] In some embodiments, still referring to Figure 7a and Figure 7b The first matching member 143 may include: a receiving groove 1431 formed on the fixing member 142 , an elastic member 1432 connected to the receiving groove 1431 , and a protrusion 1433 connected to the elastic member 1432 .

[0071] Specifically, Figure 7a As shown, the fixing member 142 may be an annular structure, the accommodating groove 1431 may be provided on the inner wall of the fixing member 142 , and the protrusion 1433 may be oriented toward the center of the fixing member 142 . The protrusion 1433 may have an inclined surface toward the traction needle 13 and a platform surface away from the traction needle 13 .

[0072] The second fitting piece 131 can be, for example, a conical structure, or a truncated cone structure, or other structures equipped with an inclined surface. When the traction needle 13 moves toward the thread holding piece 14, the inclined surface of the second fitting piece 131 can be against the inclined surface of the protrusion 1433, thereby pressing the protrusion 1433 at least partially into the receiving groove 1431, so that the second fitting piece 131 can slide over the protrusion 1433.

[0073] When the second matching piece 131 completely slides over the protrusion 1433, the protrusion 1433 can be ejected from the receiving groove 1431 under the action of the elastic piece 1432, thereby locking the second matching piece 131 above the platform surface of the protrusion 1433. Then, when the traction needle 13 is retracted, since the second matching piece 131 is locked above the platform surface of the protrusion 1433, a force will be applied to the protrusion 1433, so that the fixing piece 142 is disconnected from the extension piece 141 and moves according to the traction needle 13.

[0074] In this embodiment, the connection between the traction needle 13 and the fixing member 142 can be directly established by simply pushing the traction needle 13 to the fixing member 142 of the thread holding member 14 without additional operation to adjust the position of the traction needle 13, thereby further improving the efficiency of the operation.

[0075] In some embodiments, the second fitting member 131 may be the needle of the traction needle 13. For example, as described above, the second fitting member 131 may be conical, and its tip is sharp so that it can be used as a needle to pierce tissue. In some other embodiments, the second fitting member 131 may be disposed below the needle of the traction needle 13.

[0076] According to an embodiment of the present application, another suturing device is provided, referring to Figure 8 , comprising: a suturing portion 10, an extending portion 20 and an operating portion 30; the suturing portion 10 and the operating portion 30 are respectively connected to two ends of the extending portion 20, and the operating portion 30 is used to operate the suturing portion 10 to perform suturing.

[0077] The extension portion 20 is used to deliver the suture portion 10 into the body, so that the operator can use the operating portion 30 outside the body to operate the suture portion 10 to complete the suture. In some embodiments, the extension portion 20 can be the first pipeline 21 described in any of the embodiments above. In some embodiments, the extension portion 20 can include the first pipeline 21 and the second pipeline 22 described in any of the embodiments above. In some other embodiments, the extension portion 20 can also be an extension portion used in the relevant technology in the art, which is not limited to this.

[0078] The suturing portion 10 in this embodiment includes: a main body 11, which is formed with an inner cavity; a suture 12 and a traction needle 13, which are arranged in the inner cavity of the main body 11; and a thread holding member 14, which is rotatably connected to the main body 11 so that the thread holding member 14 can switch between an expanded state and a contracted state under the operation of the operating part 30.

[0079] A thread locking piece 144 is provided on the thread holding piece 14, and the suture 12 can pass through the thread locking piece 144; the thread holding piece 14 can be held against one side of the tissue to be sutured in the unfolded state, and the traction needle 13 can pass through the tissue to be sutured from the other side of the tissue to be sutured under the operation of the operating part 30 to reach the thread holding piece 14, and pull the thread locking piece 144 to separate from the thread holding piece 14; the thread locking piece 144 can pass through the tissue to be sutured under the traction of the traction needle 13, and be locked on the other side of the tissue to be sutured after the traction needle 13 finishes traction.

[0080] The wire locking member 144 can be connected to the wire holding member 14 by a detachable connection method such as snap-fitting, sliding fit, etc. Those skilled in the art can reasonably set its connection method so that it can be detached from the wire holding member 14 under the traction of the traction needle 13.

[0081] The suture portion 10 provided in this embodiment can be used as a supplement or substitute for the suture portion 10 of the suture device described above, and those skilled in the art can also use the suture portion 10 provided in this embodiment in combination with the suture portion 10 described above. For example, part of the thread holding members 14 in the suture portion 10 can be arranged using the method provided in this embodiment, while another part of the thread holding members 14 can be arranged using the methods provided in other embodiments described above.

[0082] Figure 9a-9c Still taking the suturing of the foramen ovale as an example, a working method of the suturing device of this embodiment is demonstrated to describe the suturing part 10 in this embodiment in more detail.

[0083] Reference Figure 9a , the body 11 can pass through the gap between the two free edges of the oval foramen, and then, the thread holding member 14 can be switched to the unfolded state under the operation of the operating unit 30, and abut against the left atrium side of the oval foramen (LA side in the figure), and the traction needle 13 can pass through the free edge of the oval foramen from the right atrium side of the oval foramen (RA side in the figure) under the operation of the operating unit 30, and then reach the thread holding member 14, and pull the thread locking member 144. The traction needle 13 can be connected to the thread locking member 144 by hooking, snapping, etc., so that it can be pulled, and the thread locking member 144 will be detached from the thread holding member 14 after the traction force is applied to it.

[0084] Reference Figure 9b The traction needle 13 can pull the locking wire member 144 to move so that it passes through the free edge of the oval foramen to reach the other side of the oval foramen. Fig.9c, the traction can be ended by operating the traction needle 13 to disengage the thread locking member 144, and the thread holding member 14 can also be switched to a contracted state. At this time, the suture portion 10 can be pulled to withdraw from the gap of the oval foramen, and the thread locking member 144 without the traction of the traction needle 13 will be left on the right atrium side of the oval foramen, and cannot return to the left atrium side of the oval foramen. Those skilled in the art can reasonably set the structure of the thread locking member 144, as long as it can pass through the tissue under the action of the traction needle 13, and after passing through the tissue, it cannot return to its original position by itself but is locked there. Several possible settings will be described in more detail below, without specific limitation.

[0085] It can be understood that in this embodiment, the suture 12 passes through the locking member 144, which means that the suture 12 passes through the locking member 144, but its two ends are still free and not restricted by the locking member 144. In the suturing devices provided in the related art and the suturing devices of other embodiments described above in this application, one end of the suture 12 usually passes through the tissue under the traction of the traction needle, and in this embodiment, since the suture 12 passes through the locking member 144, after the locking member 144 reaches the other side of the tissue, part of the suture 12 will follow the locking member 144 to the other side of the tissue (for example, part of the suture in contact with the locking member 144) and be locked there, but the two ends of the suture 12 are still located on one side of the tissue, so that the suturing method that can be achieved by the suturing device is expanded.

[0086] Fig.10a and Fig.10b The suturing of the foramen ovale is still taken as an example to illustrate the suturing effects obtained by the suturing devices in some embodiments.

[0087] In this embodiment, the suture portion 10 may include at least two thread holders 14, and the at least two thread holders 14 may be arranged along the circumference of the body 11. The distribution method thereof may refer to the distribution method of the multiple thread holders 14 in other embodiments described above, and will not be repeated here. In this embodiment, the suture 12 may pass through the thread locking members 144 on the multiple thread holders 14 in sequence. It should be particularly noted that in order to obtain Fig.10a and Fig.10b To achieve the suturing effect, one suture 12 needs to be used to pass through all the locking pieces 144 in sequence.

[0088] Fig.10a and Fig.10b The suture effects on both sides of the tissue are shown respectively. Fig.10a It is the side that the thread holding member 14 abuts against during the suturing process. Fig.10bAs shown in the figure, the suturing device in this embodiment delivers part of the suture 12 to the other side of the tissue by means of the thread lock 144, and keeps the part of the suture 12 on the other side of the tissue by the thread lock 144, thereby obtaining an effect similar to that of a purse string suture.

[0089] It can be understood that, in addition to obtaining Fig.10a and Fig.10b In addition to the suturing effect shown, the above suturing effect can also be obtained by performing multiple suturings using a suturing device with only one thread holding member 14, and there is no limitation to this.

[0090] Figure 11a-Figure 11c Several specific structures of the locking wire member 144 are provided. In addition to these structures, those skilled in the art may also select other suitable structures.

[0091] In some embodiments, reference Fig.11a The locking wire member 144 may include a threading ring 1441 and a traction ring 1442. The suture 12 may pass through the threading ring 1441, and the traction ring 1442 is connected to the threading ring 1441. The traction needle 13 may be connected to the traction ring 1442 to pull the locking wire member 144 through the tissue to be sutured.

[0092] It can be understood that the traction needle 13 itself has a puncture site, so the threading ring 1441 and the traction ring 1442 can pass through the tissue to be sutured under the traction of the traction needle 13. However, since the threading ring 1441 and the traction ring 1442 themselves are both annular and do not have a sharp puncture site, even if they are subsequently pulled by the suture 12, it is difficult for them to pass through the tissue to be sutured again, and they are thus locked on the other side of the tissue to be sutured.

[0093] In some embodiments, reference Fig.11b The thread locking member 144 may further include a connecting rod 1443. The threading ring 1441 and the traction ring 1442 may be connected to both ends of the connecting rod 1443 respectively. The advantage of providing the connecting rod 1443 is that after the traction needle 13 finishes traction, when the threading ring 1441 is subjected to the pulling force from the suture 12, the connecting rod 1443 may rotate, so that the connecting rod 1443 and the traction ring 1442, which may have been in a free state, are both held against the tissue and cannot pass through the tissue at an angle relatively perpendicular to the tissue, thereby achieving a better locking effect.

[0094] In some embodiments, reference Fig.11c The traction ring 1442 may be oval-shaped, and the threading ring 1441 may be connected to the middle of the traction ring 1442, for example. Fig.11cThe threading ring 1441 shown in the figure is located on the inner side of the traction ring 1442 and is connected in the middle of the long side of the traction ring 1442. Of course, the threading ring 1441 can also be set at another position in the middle of the traction ring 1442, such as at the center of the traction ring 1442.

[0095] In this embodiment, the advantage of the elliptical shape of the traction ring 1442 is that it has relatively sharp ends compared to a standard circular ring, and when the traction needle 13 pulls the traction ring 1442 to move, the tip of the traction ring 1442 will be roughly perpendicular to the tissue to be sutured (see Figure 9b ), so that it can more easily pass through the tissue to be sutured. After the traction of the traction needle 13 is lost, since the threading ring 1441 is set in the middle of the traction ring 1442, under the pulling force of the suture 12, the traction ring 1442 will swing to resist against the tissue (see Fig.9c and Fig.10b ), and the sharper ends will be located away from the position where it was previously passed through (there is a certain gap in the tissue here), further ensuring that the locking wire member 144 can be locked and will not pass through the tissue again.

[0096] In some embodiments, reference Fig.12 The traction needle 13 may be provided with a hook 132, which can be hooked with the traction ring 1442, so that the traction needle 13 can pull the locking wire member 144. The advantage of providing the hook 132 is that the traction needle 13 can be easily connected to the traction ring 1442, and can also be easily separated from the traction ring 1442, thereby improving the operation efficiency.

[0097] In some embodiments, Fig.12 As shown in the figure, the traction needle 13 can be formed with a blade-shaped head, and the hook-shaped body 132 can be formed in the center of the blade-shaped head, so that there are blade-shaped parts on both sides (the upper and lower sides in the figure) of the hook-shaped body 132, so that the traction needle 13 can pierce the tissue more easily and can be retracted after piercing the tissue. Those skilled in the art can also choose other suitable ways to set the traction needle 13, which is not limited to this.

[0098] As described above, after the traction needle 13 pulls the locking wire piece 144 through the tissue, it is necessary to disconnect the connection between the traction needle 13 and the locking wire piece 144 and retract the traction needle 13. The specific operation of disconnecting the connection can be that the operator moves the traction needle 13 forward through the operating part 30 so that the locking wire piece 144 is separated from the hook-shaped body 132 of the traction needle 13, and then retracts the traction needle 13.

[0099] However, in some cases, the range of movement of the traction needle 13 may be relatively narrow, resulting in a limited range of forward movement of the traction needle 13, and it is difficult for the locking wire piece 144 to completely detach from the traction needle 13. At this time, the traction needle 13 can be operated to move forward and pass through the tissue again. Since the traction needle 13 does not provide traction for the locking wire piece 144 when moving forward, the locking wire piece 144 will be blocked by the tissue and cannot follow the traction needle 13 through the tissue again, thereby detaching from the traction needle 13.

[0100] In some cases, even if the traction needle 13 is moved forward so that the thread locking member 144 is separated from the traction needle 13, the hook 132 may still be reconnected with the thread locking member 144 during the process of retracting the traction needle 13. For this reason, in some embodiments, the traction needle 13 is configured to be able to rotate under the operation of the operating part 30, so that the hook 132 can be directed toward the thread locking member 144 or away from the thread locking member 144. Therefore, after the traction needle 13 moves forward and separates from the thread locking member 144, the traction needle 13 can be rotated under the operation of the operating part 30 so that the hook 132 is away from the thread locking member 144, thereby avoiding the hook 132 from being reconnected with the thread locking member 144 during the process of retracting the traction needle 13. Similarly, those skilled in the art can enable the operating part 30 to operate the traction needle 13 to rotate by setting a suitable transmission structure, and there is no limitation to this.

[0101] According to an embodiment of the present application, another suturing device is provided, referring to Fig.13 , including: a suture portion 10, an extension portion 20 and an operating portion 30, the operating portion 30 and the suture portion 10 are connected to the extension portion 20, and the operating portion 30 is used to operate the suture portion 10 to complete the suture. The specific configuration of the extension portion 20 and the operating portion 30 can refer to any of the embodiments described above, and will not be repeated here. In some embodiments, the extension portion 20 may include the first pipeline 21 and the second pipeline 22 in any of the embodiments described above, and in some embodiments, the extension portion 20 may be the first pipeline 21 in any of the embodiments described above.

[0102] In the present embodiment, the suture portion 10 includes: a body 11, the body 11 is connected to one end of the extension portion 20, and the body 11 is formed with an inner cavity; a suture 12, the suture 12 is arranged in the inner cavity of the body 11; a thread holder 14, the thread holder 14 is rotatably connected to the body 11, so that the thread holder 14 can switch between the expanded state and the contracted state under the operation of the operating part 30, and the suture 12 can pass through the inner cavity of the body 11 and be connected to the thread holder 14; a tubular member 15, the tubular member 15 is arranged on the outside of the extension portion 20 and connected to the extension portion 20. The extension portion 20 is slidably connected so that the tubular member 15 can move toward or away from the main body 11 under the operation of the operating portion 30, and an annular cavity 151 is formed in the tube wall of the tubular member 15; the traction needle 13, the traction needle 13 is arranged in the annular cavity 151; when the thread holding member 14 is in the expanded state, the traction needle 13 can pass through the annular cavity of the tubular member 15 under the operation of the operating portion 30 to reach the thread holding member 14 and pull the suture 12, so that the suture 12 can detach from the thread holding member 14 and follow the movement of the traction needle 13 for suturing.

[0103] The specific structures of the main body 11, suture 12, traction needle 13 and thread holder 14 described in this embodiment can refer to any of the above embodiments and will not be repeated here. Different from the suture part 10 in the above embodiments, the suture part 10 in this embodiment is additionally provided with a tubular part 15, and the traction needle 13 is arranged in the annular cavity 151 of the tubular part 15. It can be understood that in the above-described embodiments, since the traction needle 13 is arranged in the inner cavity of the main body 11, the position where the traction needle 13 passes through the inner cavity of the main body 11 is relatively fixed. In this embodiment, the position where the traction needle 13 passes through can be flexibly changed by sliding the tubular part 15, thereby obtaining a better suturing effect.

[0104] The tubular member 15 can be a sleeve-like structure, for example, it can include an inner tube and an outer tube, and an annular cavity 151 can be formed between the inner tube and the outer tube. The annular cavity 151 can be closed or partially open. Those skilled in the art can set it according to actual conditions without limitation.

[0105] The stitching portion 10 described in this embodiment can also be used as a substitute for the stitching portion 10 in the embodiment described above. Figure 1 In the embodiment shown in which the first pipeline 21 and the second pipeline 22 are provided, the tubular member 15 can be provided on the outside of the first pipeline 21 and slidably connected to the first pipeline 21. At this time, the tubular member 15 can be located on one side of the second pipeline 22, or between the first pipeline 21 and the second pipeline 22. Those skilled in the art can flexibly set it according to actual needs and there is no limitation on this.

[0106] In other embodiments, the suture portion 10 described in this embodiment can be used in combination with the suture portion 10 in the embodiments described above. For example, the suture portion 10 may include a plurality of traction needles 13, some of which may be disposed in the inner cavity of the body 11, while other traction needles 13 may be disposed in the annular cavity 151 of the tubular member 15. The tubular member 15 may slide to avoid the traction needles 13 from passing through the inner cavity of the body 11, so as to prevent the presence of the tubular member 15 from affecting the traction needles 13 disposed in the inner cavity of the body 11.

[0107] In some embodiments, the traction needle 13 is also configured to be able to rotate under the operation of the operating part 30 to change the angle at which the traction needle 13 passes through the annular cavity 151, thereby making the movement of the traction needle 13 more flexible and enabling more complex suturing operations, and ensuring that after the position of the tubular member 15 is changed, the traction needle 13 can still smoothly reach the thread holding member 14 after passing through the annular cavity 151.

[0108] In some embodiments, the annular cavity 151 of the tubular member 15 can also be used to accommodate at least part of the tissue to be sutured, so that the sliding of the tubular member 15 can not only change the position where the traction needle 13 passes through, but also drive the tissue to be sutured to move, play a role in delivery, and enable the suturing device to perform more complex suturing operations, such as vascular anastomosis, bypass and other suturing operations. In some other embodiments, a certain annular gap can be formed between the tubular member 15 and the extension portion 20, and the annular gap can be used to accommodate at least part of the tissue to be sutured, so that the tissue to be sutured can also be delivered by sliding the tubular member 15.

[0109] In some embodiments, a cutting piece 152 is provided at one end of the tubular member 15 close to the body 11. The cutting piece 152 may be any structure capable of cutting tissue. A person skilled in the art may reasonably set the cutting piece 152 according to the specific tissue to be cut, and there is no limitation on this. The cutting piece 152 may be fixedly connected to one end of the tubular member 15 close to the body 11, or the cutting piece 152 may be configured to be movable under the operation of the operating portion 30. Similar to the traction needle 13, it may be received in the annular cavity 151 and may pass through one end of the tubular member 15 close to the body 11 under the operation of the operating portion 30. In some embodiments, the cutting piece 152 may be detachably connected to the tubular member 15, and the cutting piece 152 of different specifications may be replaced or removed according to actual needs.

[0110] In some embodiments, the cutting member 152 may not be provided on the tubular member 15, but a tubular cutting structure may be provided separately, and the tubular cutting structure may be provided between the stopper 20 and the tubular member 15, and may slide to complete the cutting. In some embodiments, the tubular cutting structure and the tubular member 15 may be provided replaceably on the outside of the stopper 20, and after the suturing is completed, the tubular member 15 may be removed and the tubular cutting structure may be installed to perform subsequent cutting. Those skilled in the art may also select other reasonable ways to perform the setting, which will not be described in detail here.

[0111] The following will take vascular anastomosis as an example to exemplify a suturing process of the suturing device in this embodiment. Those skilled in the art can apply it to any suitable vascular anastomosis scenario, such as anastomosis of blood vessels such as the femoral artery and femoral vein.

[0112] Reference Fig.14a , refers to connecting two blood vessels together in a suitable manner. Hereinafter, blood vessel A and blood vessel B will be used to represent the two blood vessels. Blood vessel A can be placed in the annular cavity 151 of the tubular member 15, and one end of blood vessel A can pass through the annular cavity 151 and be turned outward. This step can be completed in vitro. Then, the suture part 10 is sent into the patient's body through the extension part 20, so that the body 11 punctures into the blood vessel B, and the thread holding member 14 is opened and held against the inner wall of the blood vessel B.

[0113] Then, refer to Fig.14b , operate the tubular member 15 to slide toward the main body 11 to deliver blood vessel A to the outer wall of blood vessel B. Next, operate the traction needle 13 to pass through the annular cavity 151. Since blood vessel A is everted, the traction needle 13 will successively pass through the walls of blood vessel A and blood vessel B to reach the thread holding member 14. Thereafter, the traction line can be used to pull the suture to complete the anastomosis of the blood vessels. Moreover, after the suturing is completed, the end connecting blood vessel A and blood vessel B can still maintain the everted effect, thereby avoiding stenosis in blood vessel A after anastomosis.

[0114] Furthermore, after suturing is completed, although the blood vessels have been anastomosed, there is only one puncture point on blood vessel B (the point where the main body 11 passes through in the figure), and it is not connected with blood vessel A. At this time, the tubular member 15 and / or the cutting member 152 can be operated to cause the cutting member 152 to cut the blood vessel B on the inner side of the anastomotic edge of the blood vessel, thereby connecting blood vessel B with blood vessel A and completing the anastomosis operation.

[0115] In some other embodiments, even without the tubular member 15, the vascular anastomosis operation can be completed. Fig.15The suturing device in this embodiment may still include a suturing portion 10, an extension portion 20 and an operating portion 30 (the operating portion 30 is not shown in this figure). The suturing portion 10 in this embodiment also includes the main body 11, suture 12, traction needle 13 and thread holding member 14 as described in any of the above embodiments. Similarly, the extension portion 20 in this embodiment may also be the first pipeline 21 described above, wherein the specific technical details may refer to one or more embodiments described above, and will not be repeated here.

[0116] The difference from one or more of the above embodiments is that in this embodiment, the body 11 of the suture portion 10 is designed to be detachably connected to the extension portion 20 via a connecting rod 16 , and an annular gap can be formed between the body 11 and the extension portion 20 .

[0117] The traction needle 13 and the blood vessel A can be arranged in the inner cavity of the extension part 20. During the actual operation, the main body 11 can be removed first, and the blood vessel A can be installed in the inner cavity of the extension part 20, and the eversion can be completed. Then, the main body 11 can be installed. At this time, the everted part of the blood vessel A will pass through the inner cavity of the main body 11 from the annular gap between the main body 11 and the extension part 20. Then, the vascular anastomosis operation can be completed by referring to the steps described in other embodiments above, wherein the traction needle 13 can pass through the inner cavity of the extension part 20 under the operation of the operating part 30 to reach the thread holding member 14 for suturing.

[0118] In this embodiment, there is no need to set the tubular member 15 on the outside of the extension part 20, and the inner cavity of the extension part 20 is directly used to accommodate the blood vessel A, thereby reducing the volume of the suturing device and simplifying the structure, making it more convenient to manufacture the suturing device. However, compared with the embodiment in which the tubular member 15 is set, in this embodiment, after the blood vessel A is installed in the inner cavity of the extension part 20, the body 11 needs to be installed, and at this time, the connecting rod 16 needs to pass through the blood vessel A, and there may be a risk of damaging the blood vessel during this process.

[0119] In some embodiments, the body 11 can be configured to move toward or away from the extension portion 20 under the operation of the operating portion 30, that is, the body 11 and the extension portion 20 can move relative to each other, thereby completing the delivery operation of the blood vessel A. In some embodiments, the delivery operation of the blood vessel can also be completed by directly pushing the extension portion 20 forward. In some embodiments, a cutting piece can be provided in the inner cavity of the extension portion 20 to complete the cutting operation after the blood vessel anastomosis. Those skilled in the art can set it according to actual needs, and there is no limitation to this.

[0120] The present invention is described in detail above in conjunction with the embodiments, but the present invention is not limited thereto, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can all adopt the existing technology.

[0121] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

Claims

1. A suturing device, which is used to reach the biological tissue that needs to be sutured through the blood vessels, include: The suture portion (10) is characterized in that it also includes a first pipeline (21) and a second pipeline (22), wherein the first pipeline (21) is rotatably arranged in a tube cavity of the second pipeline (22), one end of the first pipeline (21) passes through the second pipeline (22) and is connected to the suture portion (10), and when the first pipeline (21) rotates in the second pipeline (22), it can drive the suture portion (10) to rotate so as to adjust the angle of the suture portion (10); an operating portion (30) for operating the suturing portion (10) to perform suturing, the other end of the first pipeline (21) passing through the second pipeline (22) and connected to the operating portion (30); An indicating portion (221) is provided at one end of the second pipeline (22) close to the operating portion (30), and the indicating portion (221) is used to indicate the rotation angle of the first pipeline (21); The indicating portion (221) is disc-shaped and provided with scales, and an indicating point (211) is provided at a position of the first pipeline (21) close to the indicating portion (221); During actual use of the suturing device, the first tube and the second tube will be in a blood vessel; The outer wall of the first pipeline (21) is provided with a first stopper (212), and the inner wall of the second pipeline (22) is formed with a second stopper (223), wherein the second stopper (223) is capable of stopping the first stopper (212) to limit the range within which the first pipeline (21) can rotate; The first pipeline (21) is rotatably connected to the operating part (30); The stitching part (10) comprises: A body (11), wherein the body (11) is formed with an inner cavity; A suture (12) and a traction needle (13) are arranged in the inner cavity of the body (11); a wire holding member (14), the wire holding member (14) being rotatably connected to the body (11), so that the wire holding member (14) can be switched between an expanded state and a contracted state under the operation of the operating portion (30); The suture (12) can pass through the inner cavity of the body (11) and be connected to the thread holder (14); when the thread holder (14) is in an unfolded state, the traction needle (13) can pass through the inner cavity of the body (11) under the operation of the operating unit (30) to reach the thread holder (14) and pull the suture (12), so that the suture (12) can be separated from the thread holder (14) and move with the traction needle (13) to perform suturing; The thread holding member (14) is provided with a thread locking member (144), and the suture (12) can pass through the thread locking member (144); The thread holding member (14) can be held against one side of the tissue to be sutured in the unfolded state, and the traction needle (13) can pass through the tissue to be sutured from the other side of the tissue to be sutured under the operation of the operating unit (30) to reach the thread holding member (14) and pull the thread locking member (144) away from the thread holding member (14); The thread locking member (144) can pass through the tissue to be sutured under the traction of the traction needle (13), and be locked on the other side of the tissue to be sutured after the traction of the traction needle (13) ends; The locking member (144) comprises: a threading ring (1441), through which the suture (12) can pass; and A traction ring (1442), the traction ring (1442) being connected to the threading ring (1441), and the traction needle (13) being capable of being connected in cooperation with the traction ring (1442) to pull the thread locking member (144); The locking member (144) further comprises: A connecting rod (1443), the threading ring (1441) and the traction ring (1442) are respectively connected to two ends of the connecting rod (1443).

2. The suturing device according to claim 1, in, The second pipeline (22) is provided with a locking piece (222), and the locking piece (222) is operably abutted against the first pipeline (21) to prevent the first pipeline (21) from rotating in the second pipeline (22).

3. The suturing device according to claim 1, in, The second stopper (223) is slidably connected to the second pipeline (22).

4. The suturing device according to claim 1, in, The suture portion (10) is configured to be able to enter the second pipe (22), and the first pipe (21) is configured to be able to move along the axial direction of the second pipe (22), so that the first pipe (21) and the suture portion (10) can be removed from the second pipe (22).

5. The suturing device according to claim 1, in, The suturing portion (10) comprises two thread holding members (14), and the two thread holding members (14) are respectively arranged on two sides of the body (11).

6. The suturing device according to claim 5, in, Two ends of the suture (12) are respectively connected to the two thread holding members (14).

7. The suturing device according to claim 6, in, Different marks are respectively provided at the two ends of the suture (12).

8. The suturing device according to claim 1, in, The suturing portion (10) comprises a plurality of thread holding members (14) arranged along the circumference of the body (11).

9. The suturing device according to claim 8, in, The suture portion (10) comprises a plurality of sutures (12), and two ends of each suture (12) are respectively connected to two symmetrically arranged thread holders (14).

10. The suturing device according to claim 9, in, The ends of the plurality of sutures (12) are respectively provided with different marks.

11. The suturing device according to any one of claims 1, 5-10, in, A gasket is provided in the middle of the suture (12).

12. The suturing device according to claim 1, in, The wire holding member (14) comprises: An extension piece (141), one end of the extension piece (141) being rotatably connected to the body (11); A fixing member (142) is used to fix the suture (12); the fixing member (142) is connected to an end of the extension member (141) away from the body (11); and the fixing member (142) can be detached from the extension member (141) under the traction action of the traction needle (13) and move along with the traction needle (13).

13. The suturing device according to claim 12, in, The fixing member (142) is provided with a first matching member (143), and the traction needle (13) is formed with a second matching member (131); the first matching member (143) and the second matching member (131) are capable of being matched and connected, so that the traction needle (13) can pull the fixing member (142) to move.

14. The suturing device according to claim 13, in, The first matching member (143) comprises: a receiving groove (1431) formed on the fixing member (142), an elastic member (1432) connected to the receiving groove (1431), and a protrusion (1433) connected to the elastic member (1432), wherein the protrusion (1433) is formed with an inclined surface facing the first matching member (143) and a platform surface facing away from the first matching member (143); When the traction needle (13) moves toward the thread holding member (14), the second matching member (131) abuts against the inclined surface of the protrusion (1433) to press the protrusion (1433) at least partially into the receiving groove (1431), so that the second matching member (131) can slide over the protrusion (1433); When the second matching piece (131) completely slides over the protrusion (1433), the protrusion (1433) can pop out from the receiving groove (1431) under the action of the elastic piece (1432) to lock the second matching piece (131) above the platform surface of the protrusion (1433).

15. The suturing device according to claim 14, in, The second matching piece (131) is the needle head of the traction needle (13).

16. The suturing device according to claim 1, in, The traction ring (1442) is elliptical in shape, and the threading ring (1441) is connected to the middle of the traction ring (1442).

17. The suturing device according to claim 1 or 16, in, The traction needle (13) is provided with a hook-shaped body (132), and the hook-shaped body (132) can be hooked with the traction ring (1442), so that the traction needle (13) can pull the locking wire piece (144).

18. The suturing device according to claim 17, in, The traction needle (13) is configured to be rotatable under the operation of the operating portion (30) so that the hook-shaped body (132) is directed toward or away from the locking wire member (144).

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