A cardiac intervention suturing device

Abstract

The embodiment of the present application provides a kind of heart intervention suturing device, the device includes: first puncture part, second puncture part, suture part and driving mechanism, by the driving mechanism control the first puncture part will be through the first puncture part of the tissue near the to-be-sutured site is collected into the second tube, and the tissue near the to-be-sutured site is gathered in the first puncture part collection into the second tube;Meanwhile, by the driving mechanism control the first tube drives the second puncture part towards the first puncture part direction movement, until the second puncture part penetrates the tissue near the to-be-sutured site and is fixed on the second tube, and the to-be-sutured site is sutured by the first end and the second end of the suture part.The to-be-sutured site is sutured by the suturing device provided in the embodiment of the present application, there is no residual implant in the patient's body, there is no inherent risk of septum occlusion, there is no embolism caused by implant, and there is no risk of arrhythmia and the like.

Description

Technical Field

[0001] The embodiments of this application belong to the field of clinical surgical instruments, and more specifically, relate to a cardiac interventional suturing device. Background Technology

[0002] Congenital heart disease refers to abnormalities in the physical structure or function of the heart or major blood vessels in the chest cavity caused by formation disorders or developmental abnormalities of the heart and major blood vessels during embryonic development, or by the failure of channels that should close automatically after birth to close. These include ventricular septal defects, atrial septal defects, patent foramen ovale, etc.

[0003] With the development of science and technology, these unclosed channels can now be closed through interventional surgical procedures.

[0004] Occluders have been used clinically for over twenty years and are very mature medical devices. However, because occluders are implanted foreign bodies in the human body, there are risks of causing embolism and arrhythmias. Most importantly, patients need to take anticoagulants, and the use of metal occluders can block important surgical pathways.

[0005] Even though biodegradable occluders have emerged to allow unobstructed surgical access, they are still implants that need to be degraded and metabolized within the patient's body, and may still pose a risk of embolism. Moreover, they are more expensive than ordinary metal occluders.

[0006] Therefore, surgical methods that reduce the risk of embolism, reduce the number of implants required by patients, and lower treatment costs are urgently needed in clinical practice. Summary of the Invention

[0007] In order to solve the technical problems existing in the sealing of channels that have failed to close.

[0008] This application provides a cardiac interventional suturing device, including: a first puncture section, a second puncture section, a suturing section, and a driving mechanism;

[0009] The suture part is surrounded by a first tube, and the first puncture part is axially disposed between the first tube and the second tube. The first end of the first tube is connected to the second puncture part, and the second end of the first tube and the first end of the first puncture part are both connected to the driving mechanism. The driving mechanism controls the second end of the first puncture part to extend or retract into the second tube. The first end of the suture part is connected to the second puncture part, and the second end of the suture part is connected to the first fixing part.

[0010] The driving mechanism controls the first puncture part to retract into the second tube after penetrating the tissue near the site to be sutured. During the process of retracting the first puncture part into the second tube, the tissue near the site to be sutured is gathered together. At the same time, the driving mechanism controls the first tube to drive the second puncture part to move toward the first puncture part until the second puncture part penetrates the tissue near the site to be sutured and is fixed on the second tube. The site to be sutured is then sutured through the first end and the second end of the suture part.

[0011] As a preferred embodiment of this application, the first puncture portion includes a plurality of first puncture members, a second fixing portion, and a push-pull member;

[0012] The second fixing part is provided with a first through hole, through which the first tube can move. The second fixing part is connected to the first end of the push-pull member, and the second end of the push-pull member is connected to the driving mechanism. A plurality of the first piercing members are provided at the end of the first fixing part away from the push-pull member.

[0013] In a preferred embodiment of this application, the first puncture member includes a first puncture member body and a first tip portion that are connected to each other, and the first puncture member body is fixed on a second fixing portion.

[0014] In a preferred embodiment of this application, the first puncture member is a deformable columnar structure.

[0015] In a preferred embodiment of this application, the push-pull components are distributed around the periphery of the first tube.

[0016] In a preferred embodiment of this application, a fixing sleeve is provided on the side wall of the second tube along the axial direction of the second tube, and a fastening part is provided in the fixing sleeve, which is used to fix the second puncture part that extends into the fixing sleeve.

[0017] In a preferred embodiment of this application, the fastening part is a snap fastener and / or a magnetic component.

[0018] In a preferred embodiment of this application, the second puncture part includes a plurality of second puncture elements and a third fixing part. The third fixing part is provided with a plurality of second through holes and a third through hole. The second puncture elements are provided in a one-to-one correspondence with the second through holes, and the second puncture elements can move through the second through holes. The first end of the suture part can move through the third through hole and connect with the second puncture elements. The puncture process of the first puncture part and the second puncture part moves in opposite directions.

[0019] In a preferred embodiment of this application, the second puncture member includes a second puncture member body and a second tip that are connected to each other, and the end of the second puncture member body away from the second tip is disposed in the second through hole.

[0020] In a preferred embodiment of this application, a plurality of second through holes are spaced apart around the third through hole.

[0021] In a preferred embodiment of this application, the first puncture member and the second puncture member are alternately arranged.

[0022] In a preferred embodiment of this application, a guide member is provided on the third fixing part, the first end of the guide member is connected to the third fixing part, and the second end of the guide member is connected to the first tube.

[0023] In a preferred embodiment of this application, the first end of the first tube passes through the guide member and is connected to the third fixing part, and is in communication with the third through hole.

[0024] In a preferred embodiment of this application, the guide member is a hollow conical structure.

[0025] In a preferred embodiment of this application, the driving mechanism includes a first driving mechanism and a second driving mechanism, wherein the first driving mechanism is connected to the first puncture part and the second driving mechanism is connected to the first tube.

[0026] In a preferred embodiment of this application, the first driving mechanism includes a first screw and a first nut that are threaded together, the second driving mechanism includes a second screw and a second nut that are threaded together, the first screw is connected to the first end of the first puncture part, the first tube passes through the first screw and is connected to the second screw, and the second end of the suture part passes through the first screw and the second screw and is connected to the first fixing part.

[0027] By controlling the movement of the first nut, the first screw is driven to move, thereby driving the first puncture part to extend or retract into the second tube. By controlling the movement of the second nut, the second screw is driven to move, thereby causing the first tube to move along the axial direction of the first tube.

[0028] In a preferred embodiment of this application, the first nut and the second nut are disposed on the gripper, the end of the gripper away from the first fixing part is connected to the first end of the third tube, the second end of the third tube is connected to the second tube, and the axis of the first tube, the second tube, the third tube and the gripper are the same.

[0029] Compared with the prior art, the cardiac interventional suturing device provided in this application includes: a first puncture part, a second puncture part, a suturing part, and a driving mechanism; the driving mechanism controls the second end of the first puncture part to extend or retract into the second tube; the driving mechanism controls the first puncture part to retract the first puncture part, which has penetrated the tissue near the site to be sutured, into the second tube, and during the retraction of the first puncture part into the second tube, the tissue near the site to be sutured is gathered; simultaneously, the driving mechanism controls the first tube to drive the second puncture part to move towards the first puncture part until the second puncture part penetrates the tissue near the site to be sutured and is fixed on the second tube, and the site to be sutured is sutured through the first end and the second end of the suturing part. Using the suturing device provided in this application to suture the site to be sutured, there is no residual implant in the patient's body, no inherent risk of diaphragmatic occlusion, no implant-induced embolism, and no risk of arrhythmia, etc. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Some specific embodiments of this application will be described in detail below with reference to the accompanying drawings in an exemplary and non-limiting manner. The same reference numerals in the drawings designate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of the suturing device provided in the embodiments of this application;

[0032] Figure 2 This is a three-dimensional structural diagram of the first puncture site provided in an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the fixing sleeve structure provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of the second puncture site provided in an embodiment of this application;

[0035] Figure 5 A schematic diagram of the front end structure of the suturing device is provided for an embodiment of this application;

[0036] Figure 6 This is a schematic diagram illustrating the working principle of the suturing device provided in the embodiments of this application;

[0037] Figures 7 to 11 A diagram illustrating the changing states of the suture device during use, as provided in the embodiments of this application.

[0038] Figure 12This is a schematic diagram of the seam on the room partition provided in an embodiment of this application. Detailed Implementation

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0041] In the embodiments of this application, the site to be sutured can be the foramen ovale of the heart, atrial septal defect, structural channels caused by surgery, etc.

[0042] like Figure 1 As shown, this application provides a cardiac interventional suturing device, which includes: a first puncture part 102, a second puncture part 101, a suturing part 107, and a driving mechanism.

[0043] The suture part 107 is surrounded by a first tube 112. The first end of the suture part 107 is connected to the second puncture part 101, and the second end of the suture part 107 is connected to the first fixing part 110. The first puncture part 102 is axially disposed in the second tube 103 and disposed around the first tube 112. The first end of the first puncture part 102 is connected to the driving mechanism, and the driving mechanism controls the second end of the first puncture part 102 to extend or retract into the second tube 103.

[0044] The drive mechanism controls the first puncture part 102 to retract into the second tube 103, gathering the tissue near the site to be sutured. Simultaneously, the drive mechanism controls the suture part 107 to move the second puncture part 101 towards the first puncture part 102 until the second puncture part 101 penetrates the tissue near the site to be sutured and is then fixed to the second tube 103. Subsequently, the entire suture device is removed from the body. At this point, suture threads will remain on the tissue near the site to be sutured. Tying the first and second ends of the suture threads together will close the site. In this embodiment, the suture part 107 is composed of multiple suture threads, which are made of biodegradable materials or metal.

[0045] In this embodiment, the suture portion 107 and the first puncture portion 102 can be controlled by the same control mechanism or by independent control mechanisms; this embodiment does not impose any restrictions on this.

[0046] like Figure 1 As shown, the suture section 107 and the first puncture section 102 are controlled by independent drive mechanisms. The first puncture section 102 is controlled by the first drive mechanism, and the first tube 112 is controlled by the second drive mechanism. The first drive mechanism includes a first screw 105 and a first nut 106 that are threaded together. The second drive mechanism includes a second screw 109 and a second nut 108 that are threaded together. The first screw 105 is connected to the first end of the first puncture section 102. The first tube 112 passes through the first screw 105 and is connected to the second screw 109. The second end of the suture section 107 passes through the first screw 105 and the second screw 109 and is connected to the first fixing part 110. The first fixing part 110 is disposed on the second screw 109.

[0047] The first fixing part 110 is used to fix the second end of the sewing part 107. The first nut 106 and the second nut 108 are disposed on the gripping member 111. The end of the gripping member 111 away from the first fixing part 110 is connected to the first end of the third tube 104. The second end of the third tube 104 is connected to the second tube 103. The second tube 103, the first tube 112, the third tube 104 and the gripping member 111 have the same axis.

[0048] By controlling the movement of the first nut 106, the first screw 105 is driven to move, thereby driving the first puncture part 102 to extend or retract into the first tube 112. By controlling the movement of the second nut 108, the second screw 109 is driven to move, thereby causing the suture part 107 to move along the axial direction of the first tube 112.

[0049] The first tube 112 is the outer tube of the suture part 107. The second tube 103 is used to accommodate the first puncture part 102 and to fix the fixing sleeve 103-1 of the second puncture part 101. The fixing sleeve 103-1 is disposed on the side wall of the first tube 103. The second tube 103, the third tube 104 and the gripper 111 are connected to each other in sequence. The suture part 107 passes through the channel formed by the second tube 103, the third tube 104 and the gripper 111. The driving mechanism of this application embodiment can also be other driving devices. As long as it can drive the movement of the first tube 112 and the first puncture part 102, it is within the protection scope of this application embodiment.

[0050] like Figure 2 As shown, the first puncture part 102 includes a plurality of first puncture members, a second fixing part 102-1, and a push-pull member;

[0051] Multiple first puncture elements are spaced apart on the second fixing part 102-1. The cylindrical mechanism of the second fixing part 102-1 is controlled by a first control mechanism to move the push-pull element, thereby driving the second fixing part 102-1 and multiple first puncture elements to move along the axis of the second tube 103 in the second tube 103. The second fixing part 102-1 has a first through hole 102-5 at its center. The first tube 112 passes through the first through hole 102-5 and can move in the first through hole 102-5 by a second drive mechanism.

[0052] The second fixing part 102-1 is connected to the first end of the push-pull member, and the second end of the push-pull member is connected to the first driving mechanism. The plurality of first puncture members are deformable columnar structures, which can be easily retrieved into the second tube 103. Each first puncture member consists of a first puncture member body 102-3 and a first tip 102-2 connected to each other. The end of the first puncture member body 102-3 away from the first tip 102-2 is connected to the second fixing part 102-1. The first tip 102-2 can be used to easily pierce the tissue near the site to be sutured.

[0053] In this embodiment, the push-pull member can be a plurality of spaced connectors 102-4, which are distributed around the first tube 112. The connectors 102-4 can be hollow tubes. In another embodiment, the push-pull member can also be a hollow structural member sleeved around the first tube 112. As long as it can transmit the driving force of the drive mechanism to the second fixing part 102-1, it falls within the protection scope of this embodiment.

[0054] Multiple connectors 102-4 are coaxially arranged with the first tube 112. The first end of the multiple connectors 102-4 is connected to the second fixing part 102-1, and the second end of the multiple connectors 102-4 is connected to the first driving mechanism. The connectors 102-4 are multiple columnar structures. The connectors 102-4 are used to transmit the driving force of the first driving mechanism to the first puncture member so that the first puncture member can extend or retract into the first tube 103.

[0055] like Figure 3 As shown, a fixing sleeve 103-1 is provided on the side wall of the first tube 103 along the axial direction. A fastening part 103-2 is provided in the fixing sleeve 103-1. The fastening part 103-2 is used to fix the second puncture part 101 that extends into the fixing sleeve 103-1. In this embodiment, the fastening part 103-2 is a buckle and / or a magnetic component, or other fixing structure. As long as it can fix the second puncture part 101 and will not detach from the fixing sleeve 103-1, it is within the scope of protection of this embodiment.

[0056] like Figure 4 As shown, the second puncture section 101 includes a plurality of second puncture elements and a third fixing section 101-1. The third fixing section 101-1 is provided with a plurality of second through holes 101-4 and third through holes 101-5. The plurality of second puncture elements are correspondingly arranged one-to-one with the plurality of second through holes 101-4. The second puncture elements can movably pass through the second through holes 101-4, and the suture section 107 can movably pass through the third through holes 101-5. The second puncture section 101 and the first puncture section 102 move in opposite directions during the puncture process. Each of the... The second puncture member includes a second puncture member body 101-2 and a second tip 101-3 connected to each other. The end of the second puncture member body 101-2 away from the second tip 101-3 is connected to the third fixing seat 101-1. The second puncture member is a needle-shaped mechanism with high rigidity. The second puncture member is used to pass the suture in the suture part 107 through the tissue near the site to be sutured. A plurality of second through holes 101-4 are spaced around the third through hole 101-5, which makes it easier for the suture part 107 to be more evenly distributed around the site to be sutured.

[0057] like Figure 5In order to better treat the suture site for suturing, the first puncture member and the second puncture member are alternately arranged. In this embodiment of the application, the second puncture part 101 includes four second puncture members. The tail of the second puncture member is connected to the first fixing part 110 through the suture part 107. The suture part 107 is connected to the first fixing part 110 at the tail of the suture device through a hollow first tube 112. The suture part 107 is movably arranged in the first tube 112. The first end of the first tube 112 is connected to the third fixing part 101-1 and communicates with the third through hole 101-5. The second end of the first tube 112 is connected to the driving mechanism.

[0058] The third fixing part 101-1 is provided with a guide 101-6. The direction of the guide 101-6 is consistent with the direction of the second puncture member. The first end of the guide 113 is connected to the third fixing part 101-1, and the second end of the guide 101-6 is connected to the first tube 112. As another embodiment of this application, the first end of the first tube 112 passes through the guide 101-6 and is connected to the third fixing part 101-1, and is in communication with the third through hole 101-5.

[0059] The guide 101-6 has a hollow conical structure, meaning that only the stitching part 107 passes through the guide 101-6 and the third through hole 101-5, while the first tube 112 does not pass through the guide 101-6, or the guide 101-6 is sleeved around the first tube 112.

[0060] The following describes in detail the suturing process of the foramen ovale of the heart using the cardiac interventional suturing device provided in the embodiments of this application.

[0061] like Figure 6 As shown, during the suturing of the foramen ovale, guidewire 114 and sheath 115 are delivered to foramen ovale 117. When guidewire 114 and sheath 115 are deployed from right atrium 113 to left atrium 116, guidewire 114 is then removed, and the suturing device is delivered along sheath 115 to the position of foramen ovale 117. The first tube 112 is driven by the second drive mechanism to move towards left atrium 116 and reach left atrium 116. Then, sheath 115 is withdrawn, and the third tube 104 is withdrawn to the right atrium via gripper 111. The atrium 113 is positioned such that the second puncture part 101 of the front end of the device is located in the left atrium 116, and the rest is located in the right atrium 113. At this time, the first puncture part 101 is located in the second tube 103. After the foramen ovale 117 is sutured, the second puncture part 101 of the front end of the suture device needs to be retracted into the sheath tube 115 so that it can be removed from the body. By setting the guide 113, the second puncture part 101 of the front end of the suture device can be retracted into the sheath tube 115 more effectively. The guide 113 plays a guiding role.

[0062] like Figure 7 As shown, during the foramen ovale closure, the second puncture part 101 of the front end is located in the left atrium 116, and the rest is located in the right atrium 113. At this time, the first puncture part 101 is located in the second tube 103 in a closed state, and the first puncture part 102 is not fully extended from the second tube 103, and the second puncture part 101 does not puncture the tissue near the foramen ovale of the heart.

[0063] like Figure 8 As shown, the second end of the first puncture part 102 extends out of the second tube 103 and unfolds under the control of the first driving mechanism to penetrate the secondary septum 118 and primary septum 119 of the tissue near the foramen ovale of the heart, until the first tip 102-2 of the first puncture part 102 penetrates the secondary septum 118 and primary septum 119 of the tissue near the foramen ovale of the heart and reaches a preset position. After the first puncture part 102 unfolds and penetrates the secondary septum 118 and primary septum 119 of the tissue near the foramen ovale of the heart, it is distributed around the second puncture part 101.

[0064] like Figure 9 As shown, the first driving mechanism controls the first puncture part 101 to retract into the first tube 103, thereby gathering the tissue near the foramen ovale of the heart. At the same time, the second driving mechanism controls the first tube 112 to move the second puncture part 101 toward the first puncture part 102, so that the second puncture part 101 can pass through the secondary septum 118 and primary septum 119 of the tissue near the foramen ovale of the heart and then be fixed on the second tube 103.

[0065] like Figure 10 As shown, the second driving mechanism controls the first tube 112 to drive the second puncture part 101 to move toward the first puncture part 102 until the second puncture part 101 penetrates the tissue near the foramen ovale of the heart and is then fixed on the second tube 103. That is, after the first puncture part 102 gathers the secondary septum 118 and primary septum 119 of the tissue near the foramen ovale of the heart, the second puncture part 101 penetrates the tissue near the foramen ovale of the heart in the opposite direction to the first puncture part 102 until the second puncture part 101 is fixed by the fixing sleeve 103-1 on the second tube 103. The second puncture part 101 will not detach from the fixing sleeve 103-1. At this time, the first puncture part 102 is retracted into the second tube 103 and is in an unexpanded state. The entire puncture process is completed.

[0066] like Figure 11As shown, after the entire puncture process is completed, the first tube 112 is first controlled by the second drive mechanism to move towards the left atrium 116 / away from the sheath 115. This facilitates the separation of the second puncture part 101 from the third fixation part 101-1. Then, the second drive mechanism controls the first tube 112 to drive the third fixation part 101-1 towards the first puncture part 102 (closer to the sheath 115) until the third fixation part 101-1 passes through the foramen ovale. The second puncture part 101 at the tip of the suture device is then retracted into the sheath 115. Subsequently, the sheath 115 is withdrawn and removed from the body, thus completing the suturing action. At this time, as... Figure 12 As shown, there will be sutures 220 on the interatrial septum. The unclosed foramen ovale 117 can be sutured by tying the sutures in pairs.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cardiac interventional suturing device, characterized in that, include: First puncture site, second puncture site, suture site, and drive mechanism; The suture part is surrounded by a first tube, and the first puncture part is axially disposed between the first tube and the second tube. The first end of the first tube is connected to the second puncture part, and the second end of the first tube and the first end of the first puncture part are both connected to the driving mechanism. The driving mechanism controls the second end of the first puncture part to extend or retract into the second tube. The first end of the suture part is connected to the second puncture part, and the second end of the suture part is connected to the first fixing part. The driving mechanism controls the first puncture part to retract the first puncture part that has penetrated the tissue near the site to be sutured into the second tube. During the process of the first puncture part being retracted into the second tube, the tissue near the site to be sutured is gathered together. At the same time, the driving mechanism controls the first tube to drive the second puncture part to move toward the first puncture part until the second puncture part penetrates the tissue near the site to be sutured and is fixed on the second tube. The site to be sutured is then sutured through the first end and the second end of the suture part. The second puncture part includes multiple second puncture elements and a third fixing part. The third fixing part is provided with multiple second through holes and third through holes. The second puncture elements are provided in a one-to-one correspondence with the second through holes, and the second puncture elements can move through the second through holes. The first end of the suture part can move through the third through hole and connect with the second puncture elements. The puncture process of the first puncture part and the second puncture part moves in opposite directions.

2. The cardiac interventional suturing device as described in claim 1, characterized in that, The first puncture portion includes multiple first puncture elements, a second fixing portion, and a push-pull element; The second fixing part is provided with a first through hole, through which the first tube can move. The second fixing part is connected to the first end of the push-pull member, and the second end of the push-pull member is connected to the driving mechanism. A plurality of the first piercing members are provided at the end of the first fixing part away from the push-pull member.

3. The cardiac interventional suturing device as described in claim 2, characterized in that, The first puncture member includes a first puncture member body and a first tip that are connected to each other, and the first puncture member body is fixed to a second fixing part.

4. A cardiac interventional suturing device as described in claim 2 or 3, characterized in that, The first puncture component is a deformable columnar structure.

5. A cardiac interventional suturing device as described in claim 2, characterized in that, The push-pull components are distributed around the periphery of the first tube.

6. The cardiac interventional suturing device as described in claim 1, characterized in that, A fixing sleeve is provided on the side wall of the second tube along the axial direction of the second tube. A fastening part is provided in the fixing sleeve, which is used to fix the second puncture part that extends into the fixing sleeve.

7. A cardiac interventional suturing device as described in claim 6, characterized in that, The fastening part is a snap fastener and / or a magnetic component.

8. A cardiac interventional suturing device as described in claim 7, characterized in that, The second puncture member includes a second puncture member body and a second tip that are connected to each other, with one end of the second puncture member body away from the second tip disposed in the second through hole.

9. A cardiac interventional suturing device as described in claim 7, characterized in that, Multiple second through holes are spaced apart around the third through hole.

10. A cardiac interventional suturing device as described in claim 7, characterized in that, The first puncture element and the second puncture element are alternately arranged.

11. A cardiac interventional suturing device as described in claim 7, characterized in that, A guide is provided on the third fixing part, the first end of the guide is connected to the third fixing part, and the second end of the guide is connected to the first tube.

12. A cardiac interventional suturing device as described in claim 11, characterized in that, The first end of the first tube passes through the guide and connects to the third fixing part, and is in communication with the third through hole.

13. A cardiac interventional suturing device as described in claim 11 or 12, characterized in that, The guide component has a hollow conical structure.

14. A cardiac interventional suturing device as described in claim 1, characterized in that, The driving mechanism includes a first driving mechanism and a second driving mechanism, wherein the first driving mechanism is connected to the first puncture part and the second driving mechanism is connected to the first tube.

15. A cardiac interventional suturing device as described in claim 14, characterized in that, The first driving mechanism includes a first screw and a first nut that are threaded together, and the second driving mechanism includes a second screw and a second nut that are threaded together. The first screw is connected to the first end of the first puncture part, the first tube passes through the first screw and is connected to the second screw, and the second end of the suture part passes through the first screw and the second screw and is connected to the first fixing part. By controlling the movement of the first nut, the first screw is driven to move, thereby driving the first puncture part to extend or retract into the second tube. By controlling the movement of the second nut, the second screw is driven to move, thereby causing the first tube to move along the axial direction of the first tube.

16. A cardiac interventional suturing device as described in claim 15, characterized in that, The first nut and the second nut are disposed on the gripper. The end of the gripper away from the first fixing part is connected to the first end of the third tube. The second end of the third tube is connected to the second tube. The axis of the first tube, the second tube, the third tube and the gripper are the same.

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