Separate Left Atrial Appendage Closure Clip System

Abstract

The present invention discloses a separate left atrial appendage closure clip system, comprising a clip head and a clip applier, the clip applier including a fixed handle, a clip handle, a deflection-adjusting rotating sleeve, a clip transmission member, a deflection-transmission member, and a connecting tube, the clip handle being slidably connected to the fixed handle, the deflection-adjusting rotating sleeve being threadably connected to the fixed handle, the clip transmission member being connected between the clip handle and the clip head, the deflection-transmission member being connected between the deflection-adjusting rotating sleeve and the clip head, the connecting tube being connected between the clip head and the fixed handle, the clip transmission member and the deflection-transmission member being passed through and connected within the connecting tube, and a clip head deflection mechanism driven by the deflection-transmission member being provided between the clip head and the clip applier. The use of the present invention enables the method of closing the left atrial appendage to be changed from ligation and suturing to a compression closure method using a clip, which is simple and quick to operate. Furthermore, complete closure can be achieved while avoiding bleeding, thereby improving the convenience, safety, and effectiveness of the left atrial appendage closure device.

Description

[Technical Field]

[0001] The present invention relates to cardiac surgical instruments, and more particularly to a split left atrial appendage closure clip system. [Background technology]

[0002] Atrial fibrillation is an important cause of stroke, and current research has shown that the majority of thrombi in atrial fibrillation strokes originate from the left atrial appendage. Due to its unique anatomical and functional characteristics, the left atrial appendage has become a research focus for atrial fibrillation stroke. Cardiac surgeons often perform left atrial appendage procedures simultaneously with conventional open-heart surgery, and in some patients, they also perform left atrial appendage procedures simultaneously with minimally invasive thoracoscopic surgery. For patients with pure atrial fibrillation who require surgical atrial fibrillation radiofrequency ablation, the left atrial appendage is currently primarily treated simultaneously with thoracoscopic radiofrequency ablation. Whether performed through open-heart surgery or thoracoscopic surgery, traditional methods for treating the left atrial appendage involve ligation with sutures, resection sutures, or the use of a cutting suture device, but these methods present certain operational challenges and are prone to complications. The advantage of resection followed by suturing of the left atrial appendage is that it allows complete removal with a low residual cavity rate, but the disadvantages are the cumbersome procedure and the high risk of bleeding. While the advantage of the left atrial appendage ligation method is its simplicity and speed, it suffers from the problem of difficulty in completely closing the left atrial appendage. To reduce this probability, the ligation force of the suture must be increased, which may result in the root of the left atrial appendage being severed and increasing surgical risk. Because the root of the left atrial appendage has a flat structure, closure of the left atrial appendage with a clip better conforms to its anatomical structure, making it easier to close the root of the left atrial appendage and avoiding potential problems such as residual cavities and incomplete ligation. Therefore, the clip method combines the advantages of both excision and suturing while avoiding their drawbacks. Publication No. CN114869381A discloses an atrial appendage clip comprising a ligature and a guide rod. The ligature forms a ligation loop to ligate and close the left atrial appendage, and the guide rod guides the ligation loop to the surgical position. This invention reduces the surgical incision and reduces obstruction of the surgical field caused by the atrial appendage clip. However, since this invention essentially belongs to the ligation method, it is still difficult to overcome the drawbacks inherent in the ligation method. Summary of the Invention [Problem to be solved by the invention]

[0003] Conventional left atrial appendage closure surgery methods have problems such as incomplete ligation, a high tendency for bleeding, and significant intraoperative risks. The present invention aims to solve these problems by providing a split left atrial appendage closure clip system that can easily and safely close the left atrial appendage using a clip method. [Means for solving the problem]

[0004] The technical solution of the present invention is as follows: A separate left atrial appendage closure clip system is disclosed, which includes a clip head and a clip applier, the clip applier including a fixed handle, a clip handle, a deflection-adjusting rotating sleeve, a clip transmission member, a deflection-transmission member and a connecting tube, the clip handle is slidably connected to the fixed handle, the deflection-adjusting rotating sleeve is threadably connected to the fixed handle, the clip transmission member is connected between the clip handle and the clip head, the deflection-transmission member is connected between the deflection-adjusting rotating sleeve and the clip head, the connecting tube is connected between the clip head and the fixed handle, the clip transmission member and the deflection-transmission member are passed through and connected within the connecting tube, and a clip head deflection mechanism driven by the deflection-transmission member is provided between the clip head and the clip applier. To use the present invention, a clip body is attached to the clip head, inserted into the body through a small incision port channel, and then operated with an external clip applier. Operating the clip handle closes the clip body via the clip transmission member, achieving left atrial appendage closure. The clip head deflection mechanism controls the deflection adjustment rotating sleeve and deflection transmission member to drive the clip head deflection and adjust the relative angle with respect to the connecting tube, allowing the clip head to cover the left atrial appendage at the optimal angle, without obstructing the surgeon's field of vision and providing the surgeon with the optimal field of view and closure angle. The minimally invasive thoracoscopic left atrial appendage clipping method based on this detachable left atrial appendage closure clip system involves intervention in the left atrial appendage from outside the heart, and is characterized by a high closure rate, simple operation, high safety, minimal invasiveness, rapid recovery, easy operation, and few complications.

[0005] In a preferred embodiment, the fixed handle includes a handle shaft, the clip handle is slidably inserted onto the handle shaft, a pull head groove is formed on the circumferential surface of the handle shaft along its axial direction, and an end of the clip transmission member is slidably inserted into the pull head groove and fixedly connected to the clip handle. When a force is applied to the clip handle to slide it on the handle shaft, the clip handle slides the end of the clip transmission member in tandem, pulling the clip transmission member and transmitting the pulling force to the clip head, thereby controlling the closing operation of the clip body.

[0006] In a preferred embodiment, the clip transmission member is connected to the clip handle via a pin rod attached to the clip handle, which realizes the connection between the clip handle and the clip transmission member, and has a simple structure and is easy to implement.

[0007] In a preferred embodiment, a step is provided on the inner wall of the central hole of the deflection-adjusting rotating sleeve, a pulling head is provided at the rear end of the deflection transmission member, a pair of pulling head pins are fixed radially to the pulling head, the pulling head pins are disposed through the pulling head groove and protrude outward from the pulling head groove, and the parts of the pulling head pins exposed outside the pulling head groove are engaged and fixed to the step on the inner wall of the central hole of the deflection-adjusting rotating sleeve. To deflect the clip head, simply rotate the deflection-adjusting rotating sleeve, and the relative rotation between the deflection-adjusting rotating sleeve and the fixed handle is converted into axial movement by the screw, and the step on the inner wall of the central hole of the deflection-adjusting rotating sleeve pushes and moves the pulling head of the deflection transmission member, generating an axial tensile force on the deflection transmission member, which is transmitted to the clip head and serves as the deflection power of the clip head.

[0008] In a preferred embodiment, the clip transmission member is a tension cable, which passes through the deflection transmission member, and the deflection transmission member is disposed inside the handle shaft. The clip transmission member and the deflection transmission member are disposed through the center of the handle shaft and the connecting tube, and the transmission path is accommodated inside, so that the present invention can maintain a compact structure, simplify the appearance, and improve operational reliability.

[0009] In a preferred embodiment, the clip head includes a movable clip arm and a clip head frame, a first clip body detachably connected to the movable clip arm, a second clip body detachably connected to an edge of the clip head frame opposite the movable clip arm, a clip closing structure provided between the first and second clip bodies, the movable clip arm slidably connected within the clip head frame and connected to a clip transmission member, and a rubber band for returning the movable clip arm is provided between the movable clip arm and the clip head frame. Clip bodies are attached to the movable clip arm and the edge of the clip head frame opposite the movable clip arm, and force applied to the clip handle is transmitted to the movable clip arm via the clip transmission member, causing the movable clip arm to slide against the returning force of the rubber band, gradually approaching the second clip body. When the first and second clip bodies approach each other, they close using the clip closing structure to clamp the left atrial appendage. After that, the first and second clip bodies can be attached and detached from the edges of the movable clip arm and clip head frame by subsequent operations, and the clip bodies can also be removed from the body, which makes the operation faster and reduces the time the clip bodies remain inside the body.

[0010] In a preferred embodiment, the clip head deflection mechanism includes a connecting lug and a deflection push rod, the connecting lug is mounted on the clip head frame, the connecting lug is hingedly connected to the end of the connecting tube, one end of the deflection push rod is hingedly connected to the connecting lug, and the other end of the deflection push rod is hingedly connected to the deflection transmission member. After the deflection transmission member receives driving force from the deflection adjustment rotating sleeve, it rotates the connecting lug around the hinge connection point between the connecting tube and the connecting lug, thereby realizing the deflection of the clip head.

[0011] In a preferred embodiment, a slider guide groove is provided on the edge of the clip head frame, a release slider is slidably connected to the slider guide groove, a C-shaped elastic piece is fitted on the edge of the clip head frame, the second clip body abuts against the inside of the edge of the clip head frame by the constraint of the C-shaped elastic piece, a slope is provided on the back of the release slider that contacts the C-shaped elastic piece, an unlocking cable is connected to the release slider, the unlocking cable is disposed through the connecting tube and connected to the release handle, the release handle is hingedly connected to the release handle ring, and the release handle ring is fixed to the fixed handle. After the first and second clip bodies close to clamp the left atrial appendage, the first and second clip bodies are connected to each other by the clip closing structure, and when the clip handle is first released in this state, the tensile force of the clip transmission member is released and the rubber band returns the movable clip arm. Because the second clip body is constrained to the clip head frame by the elastic piece, it cannot move with the first clip body. Because the connecting force between the first and second clip bodies is greater than the connecting force between the first clip body and the movable clip arm, the first clip body is pulled away from the movable clip arm by the second clip body. Next, when the release handle is pressed, the unlock cable is pulled, sliding the release slider within the slider guide groove. The contact point between the slope on the back of the release slider and the C-shaped elastic piece gradually moves from a lower position to a higher position on the slope, gradually increasing the pressure between the slope and the C-shaped elastic piece. Eventually, the C-shaped elastic piece unfolds, and the second clip body can no longer be constrained within the slider guide groove. This releases the second clip body from the release slider and causes it to separate from the release slider. In this way, the first and second clip bodies are completely detached from the clip head.

[0012] In a preferred embodiment, the first and second clip bodies are made of POM, which is stable and compatible with the human body environment, does not interfere with imaging tests, and does not induce rejection by the body.

[0013] In a preferred embodiment, the connecting pipe includes two half pipes that fit together, which makes it easy to arrange the clip transmission member and the deflection transmission member inside the connecting pipe. [Effects of the Invention]

[0014] The beneficial effects of the present invention are as follows: This invention improves the convenience, safety, and effectiveness of left atrial appendage closure devices. By adopting this invention, the left atrial appendage closure method can be changed from ligation and suturing to a crimp compression closure method, which is simple and quick to operate and can achieve complete closure while avoiding bleeding. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic diagram showing the structure of the present invention. [Figure 2] FIG. 2 is a schematic diagram showing the structure of the present invention with the connecting pipe removed. [Figure 3] FIG. 3 is a schematic diagram showing the transmission structure between the clip head and the clip applier in the present invention. [Figure 4] FIG. 4 is a schematic diagram showing the structure of the fixed handle in the present invention. [Figure 5] FIG. 5 is a schematic diagram showing the transmission structure between the clip head deflection mechanism and the deflection adjusting rotary sleeve in the present invention. [Figure 6] FIG. 6 is a schematic diagram showing an exploded structure of the clip applier of the present invention. [Figure 7] FIG. 7 is a schematic view showing the fitting structure of the pull head of the deflection transmission member and the deflection adjusting rotary sleeve in the present invention. [Figure 8] FIG. 8 is a schematic diagram showing the separation state of the half pipe and the deflection transmission member in the present invention. [Figure 9] FIG. 9 is a schematic view showing the transmission structure between the clip head and the clip applier in the present invention from another perspective. [Figure 10]FIG. 10 is a schematic diagram showing an exploded structure of a clip head according to the present invention. [Figure 11] FIG. 11 is a schematic diagram showing the relationship between the release slider, the C-shaped elastic piece and the second clip body in the present invention. Specific embodiments of the invention

[0016] The present invention will be described in more detail below with reference to specific embodiments shown in the drawings. Example 1

[0017] Example 1 As shown in Figures 1 to 11, the split left atrial appendage closure clip system comprises a clip head and a clip applier. The clip applier includes a fixed handle 3, a clip handle 4, a deflection adjustment sleeve 5, a clip transmission element 6, a deflection transmission element 7, and a connecting tube 8. The clip handle 4 is slidably connected to the fixed handle 3, and the deflection adjustment sleeve 5 is threadably connected to the fixed handle 3. The clip transmission element 6 is connected between the clip handle 4 and the clip head, and the deflection transmission element 7 is connected between the deflection adjustment sleeve 5 and the clip head. The connecting tube 8 is connected between the clip head and the fixed handle 3, and the clip transmission element 6 and the deflection transmission element 7 pass through the connecting tube 8. A clip head deflection mechanism driven by the deflection transmission element 7 is provided between the clip head and the clip applier.

[0018] The fixed handle 3 includes a hollow handle shaft 301 and a hand grip 302, and the clip handle 4 is slidably inserted onto the handle shaft 301. A pull-head groove 303 is formed on the peripheral surface of the threaded portion of the handle shaft 301 along the axial direction of the handle shaft 301, and the handle shaft 301 is further formed with a passage groove 304 that passes radially through the handle shaft 301 along the axial direction. An end of the clip transmission element 6 is fixedly connected to the clip handle 4, and the connecting tube 8 is press-fitted into the front end opening of the handle shaft 301. The clip transmission element 6 is connected to the clip handle 4 via a pin shaft 401, which is integrally molded with the clip handle 4 and passes through the passage groove 304. An end of the clip transmission element 6 is wrapped around the pin shaft 401. A step is formed on the inner wall of the central hole of the deflection adjusting sleeve 5, and a pull-head 701 is formed at the rear end of the deflection transmission element 7. A pair of pull head pins 704 are fixed radially to the pull head 701, and the pull head pins 704 pass through and protrude from the pull head groove 303. The exposed part of the pull head pins 704 from the pull head groove 303 engages with a step on the inner wall of the central hole of the deflection adjusting sleeve 5. The clip transmission element 6 is a steel tension cable, and the deflection transmission element 7 is a semi-open tubular element with a bow-shaped cross section and has a lumen 702. The tension cable passes through the lumen 702 of the deflection transmission element 7, and the deflection transmission element 7 passes through and connects within the handle shaft 301.

[0019] The clip head includes a movable clip arm 1 and a clip head frame 9. A first clip body fitting groove is provided on the inside of the movable clip arm 1, and a first clip body 12 is inserted into the first clip body fitting groove, with the first clip body 12 detachably connected to the movable clip arm 1. A second clip body 13 is detachably connected to the upper frame of the clip head frame 9, and a clip closing mechanism is provided between the first clip body 12 and the second clip body 13. The clip closing mechanism includes elastic engagement teeth 1201 located on both ends of the first clip body 12 and tooth grooves 1301 located on both ends of the second clip body 13, which can engage with the elastic engagement teeth 1201. The movable clip arm 1 is slidably connected within the clip head frame 9 and is connected to a clip transmission component 6. A rubber band 14 is provided between the movable clip arm 1 and the clip head frame 9, and the rubber band 14 is fixed to the lower frame of the clip head frame 9. Under normal conditions, the movable clip arm 1 approaches the lower frame due to the action of the rubber band 14. T-shaped guide grooves are provided on both inner walls of the clip head frame 9, and both ends of the movable clip arm 1 fit slidably into the T-shaped guide grooves. A release slider 2 is provided on one frame of the clip head frame 9. The clip head deflection mechanism includes a connecting lug 901 and a deflection push rod 902. The connecting lug 901 is provided on the clip head frame 9 and is integrally molded with the clip head frame 9. A U-shaped connecting seat is provided at the end of the connecting tube 8, and the connecting lug 901 is inserted into the U-shaped connecting seat and hingedly connected to the end of the connecting tube 8 via a first rotating shaft. One end of the deflection push rod 902 is hingedly connected to the connecting lug 901 via a second rotating shaft, and the other end of the deflection push rod 902 is hingedly connected to the deflection transmission part 7.

[0020] A slider guide groove 903 is provided on the outer side of the upper frame of the clip head frame 9, and a release slider 2 is slidably connected within the slider guide groove 903. A second clip body fitting groove is provided on the inner side of the upper frame of the clip head frame 9, and a C-shaped elastic plate 904 is fitted into the upper frame of the clip head frame 9. The second clip body 13 is fitted into the second clip body fitting groove on the frame of the clip head frame 9 by restraining the opening side of the C-shaped elastic plate 904, and the C-shaped elastic plate 904 engages with the elastic plate engagement groove on the frame. The opening of the C-shaped elastic plate 904 is located inside the frame, and under normal conditions, the C-shaped elastic plate 904 contracts due to its own elastic force, narrowing the opening gap enough to latch the second clip body 13 and realizing the second clip body 13's detachable connection to the upper frame of the clip head frame 9. The movable clip arm 1, release slider 2, and clip head frame 9 are all made of plastic. The back surface of the release slider 2 is provided with a slope 201 that contacts the C-shaped elastic plate 904, and one unlocking cable 202 is connected to the release slider 2. The unlocking cable 202 passes through and connects to the connecting tube 8 and is connected to the release handle 10. The release handle 10 is hingedly connected to one release handle ring 11, and the release handle ring 11 is fixedly inserted into the handle shaft 301 of the fixed handle 3. The connecting tube 8 includes two half tubes 801 that are fitted together. A front end head limit block 802 is provided in one of the half tubes 801, and the front end head limit block 802 is fitted into the lumen 702. A return spring 703 is fitted into the front end of the lumen 702, with one end of the return spring 703 contacting the front end wall of the lumen 702 and the other end contacting the front end head limit block 802.

[0021] To use the present invention, the first clip body 12 and the second clip body 13 are attached to the clip head. The first clip body 12 and the second clip body 13 are made of a polymeric implant material, POM, and have excellent biocompatibility. The clip head is inserted into the body through a small incision and, while viewed through a thoracoscope, covers the left atrial appendage. Next, the relative angle between the clip head and the connecting tube 8 is adjusted using the clip head deflection mechanism so that the clip head can cover the left atrial appendage at the optimal angle. This ensures an optimal surgical field without obstructing the surgeon's field of view. To deflect the clip head, simply rotate the deflection adjustment sleeve 5. The relative rotation between the deflection adjustment sleeve 5 and the fixed handle 3 is converted into axial movement by the screw mechanism, and the step on the inner wall of the center hole of the deflection adjustment sleeve 5 pushes the pulling head 701 of the deflection transmission element 7. This generates an axial tensile force in the deflection transmission element 7, which is transmitted to the clip head and serves as the clip head deflection force.

[0022] The hand grip 302 and clip handle 4 are grasped by hand, and the clip handle 4 is squeezed. The clip handle 4 pulls the end of the clip transmission element 6 toward the hand grip 302, which in turn pulls the movable clip arm 1, sliding it against the restoring force of the rubber band 14 and gradually approaching the upper frame of the clip head frame 9. As the first clip body 12 and the second clip body 13 approach each other, the elastic engagement teeth 1201 engage with the tooth grooves 1301, closing the first clip body 12 and the second clip body 13 to close the left atrial appendage. The two clip bodies are then connected to each other by the clip closing mechanism. After the first clip body 12 and the second clip body 13 close the left atrial appendage, the clip handle 4 is first released, the tensile force of the clip transmission element 6 is released, and the movable clip arm 1 is returned to its original position by the rubber band 14. The second clip body 13 is constrained to the clip head frame 9 by the C-shaped elastic plate 904 and cannot move with the first clip body 12.

[0023] Because the connecting force between the first clip body 12 and the second clip body 13 exceeds the connecting force between the first clip body 12 and the movable clip arm 1, the first clip body 12 is pulled away from the movable clip arm 1 by the second clip body 13. Then, by pressing the release handle 10, the unlock cable 202 is driven, which pulls the release slider 2 and slides it within the slider guide groove 903. As the portion of the inclined surface 201 on the back surface of the release slider 2, where it contacts the C-shaped elastic plate 904, moves from the lowest point to the highest point of the inclined surface 201, the pressure between the inclined surface 201 and the C-shaped elastic plate 904 gradually increases. The opening of the C-shaped elastic plate 904 expands in diameter until it can no longer latch the second clip body 13, and the second clip body 13 is released from the release slider 2 and separated from it. As a result, the first clip body 12 and the second clip body 13 are completely separated from the clip head. Example 2

[0024] Example 2 The clip closing mechanism includes tooth grooves located at both ends of the first clip body 12 and elastic engagement teeth that can engage with the tooth grooves located at both ends of the second clip body 13. The rest is the same as in the first embodiment. [Explanation of symbols]

[0025] 1: Movable clip arm, 2: Release slider, 201: Inclined surface, 202: Unlock cable, 3: Fixed handle, 301: Handle shaft, 302: Hand grip, 303: Pull head groove, 304: Passage groove, 4: Clip handle, 401: Pin rod, 5: Deflection adjustment rotating sleeve, 6: Clip transmission member, 7: Deflection transmission member, 701: Pull head, 702: Lumen, 703: Return spring, 704: Pull head pin, 8: Connecting tube, 801: Half tube, 802: Front end head limit block, 9: Clip head 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 clip body, 13: Second clip body, 1201: elastic engagement teeth, 1301: tooth grooves, 14: rubber band

Claims

1. 1. A separate left atrial appendage closure clip system comprising a clip head and a clip applier, the clip applier including a fixed handle (3), a clip handle (4), a deflection-adjusting rotating sleeve (5), a clip transmission member (6), a deflection-transmission member (7), and a connecting tube (8), the clip handle (4) being slidably connected to the fixed handle (3), the deflection-adjusting rotating sleeve (5) being threadably connected to the fixed handle (3), the clip transmission member (6) being connected between the clip handle (4) and the clip head, the deflection-transmission member (7) being connected between the deflection-adjusting rotating sleeve (5) and the clip head, the connecting tube (8) being connected between the clip head and the fixed handle (3), the clip transmission member (6) and the deflection-transmission member (7) passing through and connected within the connecting tube (8), and a clip head deflection mechanism driven by the deflection-transmission member (7) being provided between the clip head and the clip applier.

2. 2. The separated left atrial appendage closure clip system according to claim 1, wherein the fixing handle (3) comprises a handle shaft (301), the clip handle (4) is slidably inserted into the handle shaft (301), a pull head groove (303) is formed on the circumferential surface of the handle shaft (301) along its axial direction, and the end of the clip transmission member (6) is connected to the clip handle (4).

3. 3. The split type left atrial appendage closure clip system according to claim 2, wherein the clip transmission member (6) is connected to the clip handle (4) via a single pin rod (401) attached to the clip handle (4).

4. 3. The split type left atrial appendage closure clip system according to claim 2, wherein a step is provided on the inner wall of the central hole of the deflection adjustment rotating sleeve (5), a pulling head (701) is provided at the rear end of the deflection transmission member (7), a pair of pulling head pins (704) are fixed radially to the pulling head (701), the pulling head pins (704) are connected through the pulling head groove (303) and protrude outward from the pulling head groove (303), and the exposed part of the pulling head pins (704) is engaged and fixed to the step on the inner wall of the central hole of the deflection adjustment rotating sleeve (5).

5. 2. The detachable left atrial appendage closure clip system of claim 1, wherein the clip transmission member (6) is a tension cable, the tension cable is connected through the interior of the deflection transmission member (7), and the deflection transmission member (7) is arranged to penetrate the interior of the handle shaft (301).

6. 2. The left atrial appendage closure clip system according to claim 1, wherein the clip head comprises a movable clip arm (1) and a clip head frame (9), a first clip body (12) detachably connected to the movable clip arm (1), a second clip body (13) detachably connected to an edge of the clip head frame (9) facing the movable clip arm (1), a clip closing structure is provided between the first clip body (12) and the second clip body (13), the movable clip arm (1) is slidably connected within the clip head frame (9) and is connected to a clip transmission member (6), and a rubber band (14) is provided between the movable clip arm (1) and the clip head frame (9) for returning the movable clip arm (1).

7. 7. A separated left atrial appendage closure clip system as described in claim 6, characterized in that the clip head deflection mechanism comprises a connecting ear seat (901) and a deflection push rod (902), the connecting ear seat (901) is provided on the clip head frame (9), the connecting ear seat (901) is hingedly connected to the end of the connecting tube (8), one end of the deflection push rod (902) is hingedly connected to the connecting ear seat (901), and the other end of the deflection push rod (902) is hingedly connected to the deflection transmission member (7).

8. In the separated left atrial appendage closure clip system according to claim 6, a slider guide groove (903) is provided on the edge of the clip head frame (9), a release slider (2) is slidably connected within the slider guide groove (903), a C-shaped elastic piece (904) is fitted on the edge of the clip head frame (9), the second clip body (13) abuts against the inside of the edge of the clip head frame (9) by being restrained by the C-shaped elastic piece (904), and the release slider (2) a rear surface of the release slider (2) having a slope that comes into contact with a C-shaped elastic piece (904); an unlocking cable (202) connected to the release slider (2), the unlocking cable (202) passing through a connecting tube (8) and connected to a release handle (10), the release handle (10) being hingedly connected to a release handle ring (11), and the release handle ring (11) being fixed to the fixed handle (3).

9. 7. The split type left atrial appendage closure clip system according to claim 6, wherein the first clip body (12) and the second clip body (13) are made of POM.

10. A split left atrial appendage closure clip system as described in any one of claims 1 to 9, characterized in that the connecting tube (8) includes two half tubes (801), and the two half tubes (801) are fitted to each other.

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