A split-type left atrial appendage occluder system

Abstract

The present invention discloses a split - type left atrial appendage closure clip system, which includes a clip head and an applicator. The applicator includes a fixed handle, a clamping handle, a deflection adjustment sleeve, a clamping transmission member, a deflection transmission member and a connecting tube. The clamping handle is slidably connected to the fixed handle, the deflection adjustment sleeve is threadedly connected to the fixed handle. The clamping transmission member is connected between the clamping handle and the clip head, the deflection transmission member is connected between the deflection adjustment sleeve and the clip head, the connecting tube is connected between the clip head and the fixed handle. The clamping transmission member and the deflection transmission member pass through the connecting tube. A clip head deflection mechanism driven by the deflection transmission member is provided between the clip head and the applicator. By using the present invention, the closure mode of the left atrial appendage can be changed from ligation and suture to clamping and pressing closure, which is convenient and fast in operation, can avoid bleeding, and has a complete closure, thus improving the usability, safety and effectiveness of the left atrial appendage closure device.

Description

Technical Field

[0001] The present invention relates to a cardiac surgical instrument, and more specifically, to a split left atrial appendage closure clip system. Background Art

[0002] Atrial fibrillation is one of the important causes of stroke. Current research shows that most of the thrombi causing atrial fibrillation stroke originate from the left atrial appendage. Due to its special anatomical structure and functional characteristics, the left atrial appendage has become a research hotspot for atrial fibrillation stroke. Most cardiac surgeries deal with the left atrial appendage during conventional open-chest surgeries, and some patients also have the left atrial appendage treated during minimally invasive thoracoscopic-assisted surgeries. When a patient with isolated atrial fibrillation needs to undergo surgical atrial fibrillation radiofrequency ablation, currently, the left atrial appendage is mostly treated simultaneously with atrial fibrillation radiofrequency ablation under thoracoscopic assistance. Whether it is open-chest or thoracoscopic treatment of the left atrial appendage, the traditional methods are to use suture ligation, resection and suture, or a stapler to treat the left atrial appendage, but there are certain difficulties in operation and complications are likely to occur. The advantage of suturing after removing the left atrial appendage is complete removal and a low residual cavity rate, but the disadvantage is that the operation is cumbersome and the bleeding probability is high. The advantage of the method of ligating the left atrial appendage is simplicity and quickness, but there is indeed a possibility of incomplete closure of the left atrial appendage. If this probability is to be reduced, the suture ligation force needs to be increased, which may lead to the possibility of cutting the root of the left atrial appendage and increasing the surgical risk. The root of the left atrial appendage is a flat structure. Clamping the left atrial appendage better conforms to its anatomical structure, is easier to close the root of the left atrial appendage, and avoids potential risks of residual cavity and incomplete ligation. Therefore, the clamping method can be considered to avoid the disadvantages of the suture and ligation methods, and at the same time has the advantages of both. The invention with the publication number CN114869381A discloses a cardiac atrial appendage clip, including a ligating wire and a guiding rod. The ligating wire encloses a ligating loop, which can ligate and close the left atrial appendage, and the guiding rod can guide the ligating loop to the surgical position. This invention can reduce the surgical wound and reduce the occlusion of the surgical field by the cardiac atrial appendage clip. However, this invention essentially belongs to the ligation method, so it still has difficulty in overcoming the inherent defects of the ligation method. Summary of the Invention

[0003] The existing closure methods for left atrial appendage surgery have problems such as incomplete ligation, easy bleeding, and high surgical risk. To overcome these defects, the present invention provides a split left atrial appendage closure clip system to conveniently and safely achieve the closure of the left atrial appendage in a clamping manner.

[0004] The technical solution of the present invention is: a split left atrial appendage closure clip system, including a clip head and an applicator device. The applicator device includes a fixed handle, a clamping handle, a deflection adjustment sleeve, a clamping transmission member, a deflection transmission member and a connecting tube. The clamping handle is slidably connected to the fixed handle. The deflection adjustment sleeve is threadedly connected to the fixed handle. The clamping transmission member is connected between the clamping handle and the clip head. The deflection transmission member is connected between the deflection adjustment sleeve and the clip head. The connecting tube is connected between the clip head and the fixed handle. The clamping transmission member and the deflection transmission member are passed through the connecting tube. A clip head deflection mechanism driven by the deflection transmission member is provided between the clip head and the applicator device. When using the present invention, a clip body is loaded on the clip head. The clip head enters the body through a small incision channel, sleeves the left atrial appendage, and works under the control of the external applicator device. The clamping handle is operated, and the clip body is clamped through the clamping transmission member to achieve the closure of the left atrial appendage. The clip head deflection mechanism drives the clip head to deflect under the control of the deflection adjustment sleeve and the deflection transmission member, adjusts the relative angle with the connecting tube, enables the clip head to be sleeved on the left atrial appendage at the best angle, avoids blocking the sight of the surgical operator, and enables the surgical operator to obtain the best vision and closure angle. The thoracoscopic minimally invasive left atrial appendage clamping method based on this split left atrial appendage closure clip system intervenes in the left atrial appendage outside the heart, has a high closure rate, is simple to operate, has high safety, small trauma, fast recovery, is easier to operate and has fewer complications.

[0005] Preferably, the fixed handle includes a handle rod. The clamping handle is slidably sleeved on the handle rod. A pulling head groove is provided on the circumferential surface of the handle rod along the axial direction of the handle rod. The end of the clamping transmission member is slidably embedded in the pulling head groove and fixedly connected to the clamping handle. When a force is applied to the clamping handle to make the clamping handle slide on the handle rod, the clamping handle also drives the end of the clamping transmission member to slide, pulls the clamping transmission member and transmits the pulling force to the clip head to control the clip body to complete the clamping action.

[0006] Preferably, the clamping transmission member is connected to the clamping handle through a pin rod connected to the clamping handle. The connection between the clamping handle and the clamping transmission member is realized through the pin rod, and the structure is simple and the implementation is convenient.

[0007] Preferably, a step is provided on the inner wall of the central hole of the deflection adjustment sleeve. A pulling head is provided at the end of the rear end of the deflection transmission member. A pair of pulling head pins are fixedly arranged on the pulling head along the radial direction. The pulling head pins are passed through the pulling head groove and extend out of the pulling head groove. The part of the pulling head pin exposed outside the pulling head groove is stuck on the step of the inner wall of the central hole of the deflection adjustment sleeve. When deflecting the clip head, only need to rotate the deflection adjustment sleeve. The relative rotation between the deflection adjustment sleeve and the fixed handle is converted into an axial movement through the thread. The step on the inner wall of the central hole of the deflection adjustment sleeve pushes the pulling head of the deflection transmission member to move, so that the deflection transmission member generates an axial pulling force and transmits it to the clip head to provide power for the deflection of the clip head.

[0008] Preferably, the clamping transmission member is a cable, which is threaded through the deflection transmission member, and the deflection transmission member is inserted into the handle rod. The clamping transmission member and the deflection transmission member pass through the centers of the handle rod and the connecting pipe, and the transmission path is hidden, which is beneficial to keeping the structure of the present invention compact, the appearance simple, and the operation reliable.

[0009] Preferably, the chuck includes a moving clamping arm and a chuck frame. A first clamping body is detachably connected to the moving clamping arm, and a second clamping body is detachably connected to the border of the chuck frame opposite to the moving clamping arm. A clamping and locking structure is provided between the first clamping body and the second clamping body. The moving clamping arm is slidably connected to the chuck frame and connected to the clamping transmission member. A rubber band for resetting the moving clamping arm is provided between the moving clamping arm and the chuck frame. A clamping body is installed on each of the moving clamping arm and the border of the chuck frame opposite to the moving clamping arm. The force applied to the clamping handle is transmitted to the moving clamping arm through the clamping transmission member, pulling the moving clamping arm to slide against the reset force of the rubber band. The first clamping body gradually approaches the second clamping body. When the first clamping body and the second clamping body approach each other, the two clamping bodies close the clamping system by the clamping and locking structure to clamp the left atrial appendage. After that, the first clamping body and the second clamping body can be detached from the moving clamping arm and the border of the chuck frame through subsequent operations, and the clamping body can also be removed from the human body, which is more convenient and reduces the residence time of the clamping body in the human body.

[0010] Preferably, the chuck deflection mechanism includes a connecting ear seat and a deflection push rod. The connecting ear seat is arranged on the chuck frame. The connecting ear seat is hinged to the end of the connecting pipe. One end of the deflection push rod is hinged to the connecting ear seat, and the other end of the deflection push rod is hinged to the deflection transmission member. After the deflection transmission member obtains the driving force from the deflection adjusting sleeve, it drives the connecting ear seat to rotate around the hinge point of the connecting pipe and the connecting ear seat, so as to realize the deflection of the chuck.

[0011] Preferably, a slider guide groove is provided on the frame of the chuck frame, and the release slider is slidably connected in the slider guide groove. A C-shaped spring sheet is sleeved on the frame of the chuck frame. The second chuck body is attached to the inner side of the frame of the chuck frame by the constraint of the C-shaped spring sheet. An inclined surface that contacts the C-shaped spring sheet is provided on the back of the release slider. An unlocking cable is connected to the release slider, and the unlocking cable is passed through a connecting tube and connected to a release handle. The release handle is hinged on a release handle ring, and the release handle ring is fixed to the fixed handle. After the first clamp body and the second clamp body close the clamp system and tighten the left atrial appendage, the first clamp body and the second clamp body are connected together by the clamping locking structure. At this time, the clamping handle is first loosened, the tension of the clamping transmission member disappears, and the rubber band drives the moving clamp arm to reset. Since the second clamp body is constrained on the clamp head frame by the spring sheet and cannot move with the first clamp body, the binding force between the first clamp body and the second clamp body is greater than the binding force between the first clamp body and the moving clamp arm, so the first clamp body is taken away from the moving clamp arm by the second clamp body; then the release handle is pressed to drive the unlocking cable, and the unlocking cable pulls the release slider to slide in the slider guide groove, and the part where the inclined surface on the back of the release slider contacts the C-shaped spring sheet gradually shifts from the low point of the inclined surface to the high point, and the pressure between the inclined surface and the C-shaped spring sheet becomes greater and greater until the C-shaped spring sheet is stretched open so that it cannot restrict the second clamp body in the slider guide groove, and the second clamp body is released from the constraint between the release slider and the release slider, and detaches from the release slider, so that the first clamp body and the second clamp body are completely detached from the clamp head.

[0012] Preferably, the first and second clamps are made of POM, which needs to be permanently placed in the human body when necessary. POM is stable and friendly to the human environment, and will not interfere with imaging examinations or cause human rejection reactions.

[0013] Preferably, the connecting pipe comprises two half-cut pipes, which are spliced ​​together. The connecting pipe is formed by splicing two half-cut pipes, which facilitates the arrangement of the clamping transmission member and the deflection transmission member in the connecting pipe.

[0014] The beneficial effects of the present invention are:

[0015] Improve the convenience, safety and effectiveness of the left atrial appendage closure device. By adopting the present invention, the closure method of the left atrial appendage can be changed from ligation and suturing to clamping and compression closure, which is convenient and quick to operate, can avoid bleeding, and close completely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention after the connecting pipe is removed;

[0018] Figure 3 It is a schematic diagram of the transmission structure between the clamping head and the clamping device in the present invention;

[0019] Figure 4 Schematic structural diagram of the fixed handle in the present invention;

[0020] Figure 5 Schematic transmission structure diagram between the chuck deflection mechanism and the deflection adjustment sleeve in the present invention;

[0021] Figure 6 Schematic disassembled structure diagram of the clamping device in the present invention;

[0022] Figure 7 Schematic cooperation structure diagram between the pull head of the deflection transmission member and the deflection adjustment sleeve in the present invention;

[0023] Figure 8 Schematic separation state diagram of the semi-section pipe and the deflection transmission member in the present invention;

[0024] Figure 9 Schematic transmission structure diagram of another perspective between the chuck and the clamping device in the present invention;

[0025] Figure 10 Schematic disassembled structure diagram of the chuck in the present invention;

[0026] Figure 11 Schematic cooperation relationship diagram among the release slider, the C-shaped elastic piece and the second clamp body in the present invention.

[0027] In the figure, 1 - moving clamping arm, 2 - release slider, 201 - inclined surface, 202 - unlocking cable, 3 - fixed handle, 301 - handle rod, 302 - handle, 303 - pull head groove, 304 - through groove, 4 - clamping handle, 401 - pin rod, 5 - deflection adjustment sleeve, 6 - clamping transmission member, 7 - deflection transmission member, 701 - pull head, 702 - pipe cavity, 703 - return spring, 704 - pull head pin, 8 - connecting pipe, 801 - semi-section pipe, 802 - front end head limit block, 9 - chuck frame, 901 - connecting ear seat, 902 - deflection push rod, 903 - slider guide groove, 904 - C-shaped elastic piece, 10 - release handle, 11 - release handle ring, 12 - first clamp body, 13 - second clamp body, 1201 - elastic locking teeth, 1301 - tooth groove, 14 - rubber band. Detailed implementation manners

[0028] The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

[0029] Embodiment 1:

[0030] As Figures 1 to 11As shown, a split left atrial appendage closure clamp system includes a chuck and a clamping device, wherein the clamping device includes a fixed handle 3, a clamping handle 4, a deflection adjustment sleeve 5, a clamping transmission member 6, a deflection transmission member 7 and a connecting tube 8. The clamping handle 4 is slidably connected to the fixed handle 3, the deflection adjustment sleeve 5 is connected to the fixed handle 3 by a thread, the clamping transmission member 6 is connected between the clamping handle 4 and the chuck, the deflection transmission member 7 is connected between the deflection adjustment sleeve 5 and the chuck, the connecting tube 8 is connected between the chuck and the fixed handle 3, the clamping transmission member 6 and the deflection transmission member 7 are passed through the connecting tube 8, and a chuck deflection mechanism driven by the deflection transmission member 7 is provided between the chuck and the clamping device. The fixed handle 3 includes a hollow handle 301 and a handle 302. The clamping handle 4 is slidably sleeved on the handle 301. A pull head groove 303 is provided on the threaded section circumference of the handle 301 along the axial direction of the handle 301. The handle 301 is also provided with a through groove 304 that radially penetrates the handle 301 along the axial direction. The end of the clamping transmission member 6 is fixedly connected to the clamping handle 4, and the connecting pipe 8 is interference-inserted into the front end of the handle 301. The clamping transmission member 6 is connected to the clamping handle 4 through a pin 401. The pin 401 is integrally formed with the clamping handle 4 and penetrates the through groove 304. The end of the clamping transmission member 6 is wound around the pin 401. The inner wall of the center hole of the deflection adjustment rotary sleeve 5 is provided with a step, and the rear end of the deflection transmission member 7 is provided with a pull head 701, and a pair of pull head pins 704 are fixed radially on the pull head 701, and the pull head pins 704 are connected in the pull head groove 303 and extend out of the pull head groove 303, and the part of the pull head pin 704 exposed in the pull head groove 303 is stuck on the step of the inner wall of the center hole of the deflection adjustment rotary sleeve 5. The clamping transmission member 6 is a steel cable, and the deflection transmission member 7 is a semi-open pipe with an arched cross section, which has a lumen 702. The cable passes through the lumen 702 of the deflection transmission member 7, and the deflection transmission member 7 passes through the handle 301. The chuck includes a moving chuck arm 1 and a chuck frame 9, and the moving chuck arm 1 is provided with a first chuck body embedding groove on the inner side, and the first chuck body 12 is adapted to be embedded in the first chuck body embedding groove, so that the first chuck body 12 can be detachably connected to the moving chuck arm 1. The second clamp body 13 is detachably connected to the upper frame of the chuck frame 9, and a clamping and locking structure is provided between the first clamp body 12 and the second clamp body 13. The clamping and locking structure includes elastic buckle teeth 1201 located at both ends of the first clamp body 12 and tooth grooves 1301 located at both ends of the second clamp body 13 and can form a match with the elastic buckle teeth 1201. The moving clamp arm 1 is slidably connected in the chuck frame 9 and connected to the clamping transmission member 6. A rubber band 14 is provided between the moving clamp arm 1 and the chuck frame 9 to reset the moving clamp arm 1. The rubber band 14 is fixed to the lower frame of the chuck frame 9. Under normal conditions, the moving clamp arm 1 is close to the lower frame under the action of the rubber band 14. T-shaped guide grooves are provided on the inner walls of both sides of the chuck frame 9. The two ends of the moving clamp arm 1 are adapted to slide and engage with the T-shaped guide grooves. The release slider 2 is provided on a frame of the chuck frame 9.The chuck deflection mechanism includes a connecting ear seat 901 and a deflection push rod 902. The connecting ear seat 901 is arranged on the chuck frame 9 and is integrally formed with the chuck frame 9. A U-shaped connecting seat is provided at the end of the connecting tube 8. The connecting ear seat 901 is embedded in the U-shaped connecting seat and is hinged to the end of the connecting tube 8 through a first rotating shaft. One end of the deflection push rod 902 is hinged to the connecting ear seat 901 through a second rotating shaft, and the other end of the deflection push rod 902 is hinged to the deflection transmission member 7. The upper frame of the chuck frame 9 is provided with a slider guide groove 903 on the outside, and a release slider 2 is slidably connected in the slider guide groove 903. The upper frame of the chuck frame 9 is provided with a second clamp body embedded groove on the inside, and a C-shaped spring piece 904 is sleeved on the upper frame of the chuck frame 9. The second clamp body 13 is embedded in the second clamp body embedded groove of the frame of the chuck frame 9 through the constraint of the opening side of the C-shaped spring piece 904. The C-shaped spring piece 904 is stuck in the spring piece slot on the frame, and the opening of the C-shaped spring piece 904 is located on the inner side of the frame. Under normal conditions, the C-shaped spring piece 904 shrinks under its own elastic force, and the opening gap is reduced, which is enough to hang the second clamp body 13, so as to realize the detachable connection of the second clamp body 13 on the upper frame of the chuck frame 9. The moving clamp arm 1, the release slider 2 and the chuck frame 9 are all made of plastic. The back of the release slider 2 is provided with an inclined surface 201 that contacts the C-shaped spring sheet 904. The release slider 2 is connected with an unlocking cable 202. The unlocking cable 202 is passed through the connecting tube 8 and connected to a release handle 10. The release handle 10 is hinged on a release handle ring 11. The release handle ring 11 is fixedly sleeved on the handle rod 301 of the fixed handle 3. The connecting tube 8 includes two half-cut tubes 801, and the two half-cut tubes 801 are spliced. A front end stop block 802 is provided in one of the half-cut tubes 801. The front end stop block 802 is embedded in the lumen 702. A reset spring 703 is embedded in the front end of the lumen 702. One end of the reset spring 703 abuts against the front end wall of the lumen 702, and the other end abuts against the front end stop block 802.

[0031] When the present invention is used, the first clamping body 12 and the second clamping body 13 are loaded on the chuck. The first clamping body 12 and the second clamping body 13 are made of POM, a high molecular implantable material, which has good biocompatibility. The chuck enters the body through a small incision channel and, as shown by the thoracoscope, sleeves the left atrial appendage. Then, the relative angle between the chuck and the connecting pipe 8 is adjusted through the chuck deflection mechanism, so that the chuck can be sleeved on the left atrial appendage at the best angle, avoiding blocking the view of the surgical operator and enabling the surgical operator to obtain the best vision. When deflecting the chuck, only need to rotate the deflection adjustment sleeve 5. The relative rotation between the deflection adjustment sleeve 5 and the fixed handle 3 is converted into an axial movement through the thread. The step on the inner wall of the central hole of the deflection adjustment sleeve 5 pushes the pull head 701 of the deflection transmission member 7 to move, causing the deflection transmission member 7 to generate an axial tension force, which is transmitted to the chuck to provide power for the deflection of the chuck. Hold the handle 302 and the clamping handle 4 by hand, squeeze the clamping handle 4. The clamping handle 4 drives the end of the clamping transmission member 6 to approach the handle 302. The clamping transmission member 6 pulls the moving clamping arm 1 to slide against the restoring force of the rubber band 14 and gradually approaches the upper border of the chuck frame 9. When the first clamping body 12 and the second clamping body 13 approach each other, the elastic locking teeth 1201 are snapped into the tooth grooves 1301, and the first clamping body 12 and the second clamping body 13 are clamped to close the left atrial appendage, and the two clamping bodies are connected together through the clamping and locking structure. After the first clamping body 12 and the second clamping body 13 close the clamping system to clamp the left atrial appendage tightly, first release the clamping handle 4 at this time. The pulling force of the clamping transmission member 6 disappears, and the rubber band 14 drives the moving clamping arm 1 to reset. Since the second clamping body 13 is constrained on the chuck frame 9 by the C-shaped elastic piece 904 and cannot move with the first clamping body 12, the binding force between the first clamping body 12 and the second clamping body 13 is greater than the binding force between the first clamping body 12 and the moving clamping arm. Therefore, the first clamping body 12 is driven away from the moving clamping arm 1 by the second clamping body 13; then press the release handle 10 to drive the unlocking cable 202. The unlocking cable 202 pulls the release slider 2 to slide in the slider guide groove 903. The contact part between the inclined surface 201 on the back of the release slider 2 and the C-shaped elastic piece 904 gradually transfers from the low point to the high point of the inclined surface 201, and the pressure between the inclined surface 201 and the C-shaped elastic piece 904 becomes larger and larger until the opening of the C-shaped elastic piece 904 is stretched to be insufficient to hang the second clamping body 13, and the second clamping body 13 is released from the constraint with the release slider 2 and disengages from the release slider 2. In this way, the first clamping body 12 and the second clamping body 13 are all detached from the chuck.

[0032] Embodiment 2:

[0033] The clamping and locking structure includes tooth grooves at both ends of the first clamping body 12 and elastic locking teeth at both ends of the second clamping body 13 that can cooperate with the tooth grooves. The rest is the same as in Embodiment 1.

Claims

1. A split left atrial appendage occluder system, characterized in that It includes a chuck and a clip applying device. The clip applying device includes a fixed handle, a clamping handle, a deflection adjusting sleeve, a clamping transmission member, a deflection transmission member and a connecting pipe. The clamping handle is slidably connected to the fixed handle. The deflection adjusting sleeve is threadedly connected to the fixed handle. The clamping transmission member is connected between the clamping handle and the chuck. The deflection transmission member is connected between the deflection adjusting sleeve and the chuck. The connecting pipe is connected between the chuck and the fixed handle. The clamping transmission member and the deflection transmission member are passed through the connecting pipe. A chuck deflection mechanism driven by the deflection transmission member is provided between the chuck and the clip applying device. The chuck includes a moving clamping arm and a chuck frame. A first clip body is detachably connected to the moving clamping arm. A second clip body is detachably connected to the border of the chuck frame opposite to the moving clamping arm. A clamping locking structure is provided between the first clip body and the second clip body. The moving clamping arm is slidably connected in the chuck frame and connected to the clamping transmission member. A rubber band for resetting the moving clamping arm is provided between the moving clamping arm and the chuck frame.

2. The split left atrial appendage occluder system according to claim 1, wherein the fixation The handle includes a handle rod. The clamping handle is slidably sleeved on the handle rod. A pull head groove is provided on the circumferential surface of the handle rod along the axial direction of the handle rod. The end of the clamping transmission member is connected to the clamping handle.

3. The split left atrial appendage closure clip system according to claim 2, characterized in that The clamping transmission member is connected to the clamping handle through a pin rod connected to the clamping handle.

4. The split left atrial appendage occluder system according to claim 2, wherein the deflection The inner wall of the central hole of the adjusting sleeve is provided with a step. The end of the rear end of the deflection transmission member is provided with a pull head. A pair of pull head pins are fixed radially on the pull head. The pull head pins are passed through the pull head groove and extend out of the pull head groove. The part of the pull head pin exposed outside the pull head groove is stuck on the step of the inner wall of the central hole of the deflection adjusting sleeve.

5. The split left atrial appendage closure clip system according to claim 1, characterized in that The clamping transmission member is a cable. The cable is passed through the deflection transmission member. The deflection transmission member is passed through the handle rod.

6. The split left atrial appendage occlusion clip system according to claim 1, characterized in that The chuck deflection mechanism includes a connecting ear seat and a deflection push rod. The connecting ear seat is provided on the chuck frame. The connecting ear seat is hinged to the end of the connecting pipe. One end of the deflection push rod is hinged to the connecting ear seat. The other end of the deflection push rod is hinged to the deflection transmission member.

7. The split left atrial appendage closure clip system according to claim 1, characterized in that A slider guide groove is provided on the border of the chuck frame. A release slider is slidably connected in the slider guide groove. A C-shaped elastic sheet is sleeved on the border of the chuck frame. The second clip body is abutted against the inner side of the border of the chuck frame by the restraint of the C-shaped elastic sheet. An inclined surface in contact with the C-shaped elastic sheet is provided on the back of the release slider. An unlocking cable is connected to the release slider. The unlocking cable is passed through the connecting pipe and connected to a release handle. The release handle is hinged to a release handle ring. The release handle ring is fixed on the fixed handle.

8. The split left atrial appendage closure clip system according to claim 1, characterized in that The materials of the first clip body and the second clip body are POM.

9. The split left atrial appendage closure clip system according to any one of claims 1 to 8, characterized in that The connecting pipe includes two half-section pipes, and the two half-section pipes are joined together.

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