Left Atrial Appendix Occlusion Clip System, Split Type

Description

1 / 22 “Split-Type Left Atrial Appendix Occlusion Clip System” FIELD OF THE INVENTION

[0001] The present invention relates to a cardiac surgical instrument and, more specifically, to a split-type left atrial appendage occlusion clip system. FUNDAMENTALS OF THE INVENTION

[0002] Atrial fibrillation is a major cause of stroke, and current studies show that most thrombi that cause strokes related to atrial fibrillation originate in the left atrial appendage. Due to its special anatomical structure and functional characteristics, the left atrial appendage has become a focal point in research on strokes related to atrial fibrillation. In cardiac surgery, treatment of the left atrial appendage is usually performed concurrently with conventional open thoracic surgeries, but it can also be done in patients during minimally invasive thoracoscopically assisted surgeries. When the patient presents with isolated atrial fibrillation and requires radiofrequency ablation surgery, the most common approach currently is thoracoscopically assisted radiofrequency ablation for atrial fibrillation with concomitant treatment of the left atrial appendage.Whether in thoracic surgery. Petition 870260050442, dated 05 / 26 / 2026, page 27 / 50 2 / 22 Open or thoracoscopically assisted treatment of the left atrial appendage, traditional methods for treating the left atrial appendage include suture ligation, excision with suture, or the use of a cutting stapler, but these operations can be difficult and prone to complications. The advantages of left atrial appendage excision followed by suture are complete removal and a low rate of residual cavity, while the disadvantages include the complexity of the operation and a higher probability of bleeding. The left atrial appendage ligation method is simple and quick, but there is a possibility of incomplete occlusion of the left atrial appendage. To reduce this probability, the suture ligation force needs to be increased, which can lead to cutting the base of the left atrial appendage and increase surgical risk.The base of the left atrial appendage has a flattened structure, and clip occlusion of the left atrial appendage is more aligned with its anatomical structure, facilitating complete closure of the base of the left atrial appendage and avoiding residual cavities and incomplete ligation. Therefore, clip occlusion can be considered to avoid the disadvantages of suture and ligation excision methods, combining the advantages of both. The invention under publication number CN114869381A discloses a clip for the atrial appendage, comprising a tie line and a guide rod, where the tie line... Petition 870260050442, dated 05 / 26 / 2026, page 28 / 50 3 / 22 forms a tie loop that can tie and close the left atrial appendage, and the guide rod can guide the tie loop into the surgical position. This invention can reduce the surgical incision and obstruction of the surgical field by the atrial appendage clip. However, this invention is essentially a ligation method and therefore it is still difficult to overcome the disadvantages inherent in the ligation method. DESCRIPTION OF THE INVENTION

[0003] Existing occlusion methods used in left atrial appendage surgeries present problems such as incomplete ligation, easy bleeding, and high surgical risk. To overcome these shortcomings, the present invention proposes a split-type left atrial appendage occlusion clip system to achieve convenient and safe left atrial appendage occlusion by means of a clipping method.

[0004] The technical solution of the present invention is: a split-type left atrial appendage occlusion clip system, comprising a clip head and a clip application device, wherein the clip application device comprises a fixed handle, a clamping handle, a deflection adjustment sleeve, a clamping transmission element, a deflection transmission element and a connecting tube, the clamping handle being slidably connected to the fixed handle, the deflection adjustment sleeve being connected to the fixed handle by Petition 870260050442, dated 05 / 26 / 2026, page 29 / 50 4 / 22 thread, the clamping transmission element is connected between the clamping handle and the clip head, the deflection transmission element 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 element and the deflection transmission element pass through the connecting tube, and a clip head deflection mechanism actuated by the deflection transmission element is provided between the clip head and the clip application device. When using the present invention, clip bodies are loaded into the clip head, which is introduced into the human body through a small incision channel to encircle the left atrial appendage and operate under the control of the external clip application device. When operating the clamping handle, the clamping transmission element is actuated to close the clip body, achieving occlusion of the left atrial appendage.The clip head deflection mechanism, under the control of the deflection adjustment sleeve and the deflection transmission element, actuates the clip head deflection, adjusting the relative angle with the connecting tube, allowing the clip head to be positioned at the ideal angle to encircle the left atrial appendage, avoiding obstruction of the surgical operator's line of sight and providing the surgical operator with the best field of view and occlusion angle. The occlusion method. Petition 870260050442, dated 05 / 26 / 2026, page 30 / 50 5 / 22 minimally invasive thoracoscopically assisted left atrial appendage occlusion system based on this split-type left atrial appendage occlusion clip system intervenes in the left atrial appendage externally to the heart, with a high occlusion rate, simple operation, high safety, less trauma and rapid recovery, being easier to operate and with fewer complications.

[0005] Preferably, the fixed handle comprises a handle rod, the clamping handle is slidably fitted into the handle rod, a pull groove is provided on the circumferential surface of the handle rod axially along the handle rod, and the end of the clamping transmission element is slidably fitted into the pull groove and fixedly connected to the clamping handle. When force is applied to the clamping handle, causing the clamping handle to slide on the handle rod, the clamping handle also moves the end of the clamping transmission element, pulling the clamping transmission element and transmitting the pull force to the clip head, controlling the clip body to complete the closing action.

[0006] Preferably, the clamping transmission element is connected to the clamping handle by means of a pin fixed to the clamping handle. The connection between the clamping handle and the clamping transmission element is made by means of the pin, which simplifies the Petition 870260050442, dated 05 / 26 / 2026, page 31 / 50 6 / 22 structure and facilitates implementation.

[0007] Preferably, the inner wall of the central hole of the deflection adjustment sleeve has a step, the rear end of the deflection transmission element has a pull head, the pull head has a pair of radially fixed pull pins, the pull pins pass through the pull groove and extend out of the pull groove, and the part of the pull pins exposed outside the pull groove is fitted into the step of the inner wall of the central hole of the deflection adjustment sleeve. When deflecting the clip head, simply rotate the deflection adjustment sleeve, and the relative rotational movement between the deflection adjustment sleeve and the fixed handle is converted into axial movement by means of the thread.The step on the inner wall of the center hole of the deflection adjustment sleeve pushes the movement of the deflection transmission element's pull head, causing the deflection transmission element to produce an axial pull force, which is transmitted to the clip head, providing energy for the clip head's deflection.

[0008] Preferably, the tightening transmission element is a pull cable that passes through the deflection transmission element, and the deflection transmission element passes through the handle rod. The tightening and deflection transmission elements pass through the center of the handle rod and the connecting tube, and the Petition 870260050442, dated 05 / 26 / 2026, page 32 / 50 The 7 / 22 transmission path is concealed, which contributes to the present invention maintaining a compact structure, simple appearance, and reliable operation.

[0009] Preferably, the clip head comprises a movable clip arm and a clip head frame, a first clip body is removablely connected to the movable clip arm, a second clip body is removablely connected to the edge of the clip head frame opposite the movable clip arm, a clip locking structure is provided between the first clip body and the second clip body, the movable clip arm is slidingly connected within the clip head frame and connected to the clamping transmission element, and an elastic band is provided between the movable clip arm and the clip head frame to restore the movable clip arm. A clip body is installed on each of the movable clip arm and the edge of the clip head frame opposite the movable clip arm.The force applied to the clamping handle is transmitted to the movable clip arm via the clamping transmission element, pulling the movable clip arm to slide and overcome the restoring force of the elastic, bringing the first clip body closer to the second clip body. When the first clip body and the second clip body meet, the two clip bodies close the clip system via the clip locking structure to secure the appendix. Petition 870260050442, dated 05 / 26 / 2026, page 33 / 50 8 / 22 left atrial. The first clip body and the second clip body can then be disconnected from the movable clip arm and the edge of the clip head frame through subsequent operations, allowing their removal from the human body, making use faster and reducing the dwell time of the clip bodies inside the human body.

[0010] Preferably, the clip head deflection mechanism comprises a connecting seat with eyelets and a deflection thrust rod, the connecting seat with eyelets being provided in the clip head frame, being articulated to the end of the connecting tube, one end of the deflection thrust rod is articulated to the connecting seat with eyelets, and the other end of the deflection thrust rod is articulated to the deflection transmission element. After the deflection transmission element receives motive force from the deflection adjustment sleeve, it drives the connecting seat with eyelets to rotate around the articulation point between the connecting tube and the connecting seat with eyelets, thus performing the deflection of the clip head.

[0011] Preferably, the edge of the clip head frame has a sliding guide groove, a sliding release block is slidingly connected inside the sliding guide groove, a C-shaped elastic blade is fitted to the edge of the frame. Petition 870260050442, dated 05 / 26 / 2026, page 34 / 50 9 / 22 clip head, the second clip body is attached to the inner edge of the clip head frame by the C-shaped elastic blade restraint, the rear of the release slide block has an inclined surface that contacts the C-shaped elastic blade, a release pull cable is connected to the release slide block, the release pull cable passes through the connecting tube and is connected to a release handle, and the release handle is articulated to a release handle ring, the release handle ring is fixed to the fixed handle. After the first clip body and the second clip body close the clip system to secure the left atrial appendage, the first clip body and the second clip body are connected to each other by means of the clip locking structure.At this point, first release the gripping handle; the pulling force of the gripping transmission element disappears, and the elastic band restores the movable clip arm. Since the second clip body is constrained to the clip head frame by the elastic blade, it cannot move with the first clip body, and the binding force between the first clip body and the second clip body is greater than the binding force between the first clip body and the movable clip arm. Therefore, the first clip body is removed from the movable clip arm by the second clip body. Then, press the handle. Petition 870260050442, dated 05 / 26 / 2026, page 35 / 50 10 / 22 release, actuating the release pull cable. The release pull cable pulls the release slide block to slide within the slide guide groove, and the portion of the inclined surface on the back of the release slide block that contacts the C-shaped elastic blade gradually moves from the lowest point to the highest point of the inclined surface. The pressure between the inclined surface and the C-shaped elastic blade progressively increases until the C-shaped elastic blade opens so that it can no longer restrict the second clip body within the slide guide groove. The second clip body is then released from the restriction with the release slide block and detaches from the release slide block, so that the first clip body and the second clip body are completely detached from the clip head.

[0012] Preferably, the material of the first clip body and the second clip body is POM. The first clip body and the second clip body need to be permanently implanted in the human body, if necessary. POM is stable in nature, relatively friendly to the human body environment, does not interfere with imaging examinations, and does not cause rejection reactions in the human body.

[0013] Preferably, the connecting tube comprises two half-section tubes, the two tubes being Petition 870260050442, dated 05 / 26 / 2026, page 36 / 50 1 1 / 22 half-section pipes joined together. The connecting pipe consists of two half-section pipes joined together, which facilitates the arrangement of the clamping and deflection transmission elements inside the connecting pipe.

[0014] The beneficial effects of the present invention are: It improves the convenience, safety, and effectiveness of the left atrial appendage occlusion device. By using the present invention, the method of left atrial appendage occlusion can be changed from ligation and suture to compression clipping occlusion, which is convenient and quick to operate, and can prevent bleeding and ensures complete occlusion. DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 presents the schematic diagram of the structure of the present invention;

[0016] Figure 2 shows the schematic diagram of the structure of the present invention after removal of the connecting tube;

[0017] Figure 3 shows the schematic diagram of the transmission structure between the clip head and the clip application device of the present invention;

[0018] Figure 4 shows the schematic diagram of the fixed handle structure of the present invention;

[0019] Figure 5 shows the schematic diagram of the transmission structure between the mechanism Petition 870260050442, dated 05 / 26 / 2026, page 37 / 50 12 / 22 clip head deflection and deflection adjustment sleeve of the present invention;

[0020] Figure 6 shows the schematic diagram of the disassembled structure of the clip application device of the present invention;

[0021] Figure 7 presents the schematic diagram of the fitting structure of the traction head of the deflection transmission element and the deflection adjustment sleeve of the present invention;

[0022] Figure 8 presents the schematic diagram of the separation state of the half-section tube and the deflection transmission element of the present invention;

[0023] Figure 9 presents the schematic diagram of the transmission structure between the clip head and the clip application device of the present invention from another perspective;

[0024] Figure 10 shows the schematic diagram of the disassembled structure of the clip head of the present invention;

[0025] Figure 11 shows the schematic diagram of the interlocking relationship between the sliding release block, the C-shaped elastic blade and the second clip body of the present invention.

[0026] In the figures: 1 - Movable clip arm, 2 - Sliding release block, 201 - Inclined surface, 202 - Unlocking pull cable, 3 Petition 870260050442, dated 05 / 26 / 2026, pages 38 / 50 13 / 22 Fixed handle, 301 - Handle rod, 302 - Grip, 303 - Traction groove, 304 - Through groove, 4 - Clamping handle, 401 - Pin, 5 - Deflection adjustment sleeve, 6 Clamping transmission element, 7 - Deflection transmission element, 701 - Traction head, 702 Tubular cavity, 703 - Restoration spring, 704 - Traction pin, 8 - Connecting tube, 801 - Half-section tube, 802 - Front end limiting block, 9 - Clip head frame, 901 - Eyelet connection seat, 902 - Deflection thrust rod, 903 - Sliding guide groove, 904 - C-shaped elastic blade, 10 Release handle, 11 - Release handle ring, 12 First clip body, 13 - Second clip body, 1201 - Elastic attachment tooth, 1301 - Tooth groove, 14 - Elastic. EXAMPLES OF CONCRETIZATIONS OF THE INVENTION

[0027] The present invention will be described in more detail below with reference to the examples of embodiments illustrated in the drawings.

[0028] EXAMPLE 1: As shown in Figures 1 to 11, a split-type left atrial appendage occlusion clip system, comprising a clip head and a clip application device, wherein the clip application device comprises a fixed handle (3), a clamping handle (4), a deflection adjustment sleeve (5), a clamping transmission element (6), a transmission element of Petition 870260050442, dated 05 / 26 / 2026, pages 39 / 50 14 / 22 deflection (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 thread, the clamping transmission element (6) is connected between the clamping handle (4) and the clip head, 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), the clamping transmission element (6) and the deflection transmission element (7) pass through the connecting tube (8), and a clip head deflection mechanism driven by the deflection transmission element (7) is provided between the clip head and the clip application device.The fixed handle (3) comprises a hollow handle rod (301) and a grip (302), the gripping handle (4) is slidingly fitted into the handle rod (301), a pull groove (303) is provided on the circumferential surface of the threaded segment of the handle rod (301) axially along the handle rod (301), the handle rod (301) has, axially, a through groove (304) that radially passes through the handle rod (301), the end of the gripping transmission element (6) is fixedly connected to the gripping handle (4), and the connecting tube (8) is fitted by interference into the front port of the handle rod (301). The gripping transmission element (6) is connected to the gripping handle. Petition 870260050442, dated 05 / 26 / 2026, pages 40 / 50 15 / 22 (4) by means of a pin (401), the pin (401) is integrally molded with the clamping handle (4) and passes through the through groove (304), and the end of the clamping transmission element (6) is wrapped around the pin (401). The inner wall of the central hole of the deflection adjustment sleeve (5) has a step, the rear end of the deflection transmission element (7) has a traction head (701), the traction head (701) has a pair of radially fixed traction pins (704), the traction pins (704) pass through the traction groove (303) and extend out of the traction groove (303), and the part of the traction pins (704) exposed outside the traction groove (303) is fitted into the step of the inner wall of the central hole of the deflection adjustment sleeve (5).The clamping transmission element (6) is a steel traction cable, the deflection transmission element (7) is a semi-open tube with an arc-shaped cross-section, having a tubular cavity (702), the traction cable passes through the tubular cavity (702) of the deflection transmission element (7), and the deflection transmission element (7) passes through the handle rod (301). The clip head comprises a movable clip arm (1) and a clip head frame (9), and the inner side of the movable clip arm (1) has a fitting groove for the first clip body, in which a first clip body (12) is adapted and fitted, so that the first clip body (12) can be connected in a way. Petition 870260050442, dated 05 / 26 / 2026, page 41 / 50 16 / 22 removable to the movable clip arm (1). A second clip body (13) is removablely connected to the upper edge of the clip head frame (9), and a clip locking structure is provided between the first clip body (12) and the second clip body (13). The clip locking structure comprises elastic locking teeth (1201) located at both ends of the first clip body (12) and tooth grooves (1301) located at both ends of the second clip body (13), which can engage with the elastic locking teeth (1201). The movable clip arm (1) is slidingly connected within the clip head frame (9) and connected to the clamping transmission element (6), and an elastic band (14) is provided between the movable clip arm (1) and the clip head frame (9) to restore the movable clip arm (1). The elastic band (14) is fixed to the lower edge of the clip head frame (9).Under normal conditions, under the action of the elastic band (14), the movable clip arm (1) approaches the lower edge of the frame. The two inner side walls of the clip head frame (9) have T-shaped guide grooves, the two ends of the movable clip arm (1) engage and slide with the T-shaped guide grooves, and a sliding release block (2) is provided on one of the edges of the clip head frame (9). The clip head deflection mechanism comprises a connecting seat with eyelets (901) and. Petition 870260050442, dated 05 / 26 / 2026, pages 42 / 50 17 / 22 a deflection thrust rod (902), the eyelet connection seat (901) is provided in the clip head frame (9), being integrally molded with the clip head frame (9). The end of the connecting tube (8) has a U-shaped connection seat. The eyelet connection seat (901) is fitted into the U-shaped connection seat and articulated to the end of the connecting tube (8) by means of a first axis of rotation. One end of the deflection thrust rod (902) is articulated to the eyelet connection seat (901) by means of a second axis of rotation, and the other end of the deflection thrust rod (902) is articulated to the deflection transmission element (7). The outer part of the upper edge of the clip head frame (9) has a sliding guide groove (903), and a sliding release block (2) is slidingly connected within the sliding guide groove (903).The inner part of the upper edge of the clip head frame (9) has a docking groove for the second clip body, a C-shaped elastic blade (904) is fitted into the upper edge of the clip head frame (9), the second clip body (13) is fitted into the docking groove for the second clip body on the edge of the clip head frame (9) by the restraint of the C-shaped elastic blade (904). The C-shaped elastic blade (904) is fitted into the elastic blade groove on the edge of the frame, and the opening of the elastic blade in. Petition 870260050442, dated 05 / 26 / 2026, pp. 43 / 50 18 / 22 C-shaped (904) is located on the inner side of the frame edge. Under normal conditions, the C-shaped elastic blade (904) contracts under its own elastic force, and the gap in the opening decreases, being sufficient to secure the second clip body (13), performing the removable connection of the second clip body (13) on the upper edge of the clip head frame (9). The movable clip arm (1), the sliding release block (2) and the clip head frame (9) are all made of plastic.The rear part of the sliding release block (2) has an inclined surface (201) that contacts the C-shaped elastic blade (904), a release pull cable (202) is connected to the sliding release block (2), the release pull cable (202) passes through the connecting tube (8) and is connected to a release handle (10), and the release handle (10) is articulated to a release handle ring (11), the release handle ring (11) is fixedly fitted to the handle rod (301) of the fixed handle (3). The connecting tube (8) comprises two half-section tubes (801), the two half-section tubes (801) being joined together. One of the half-section tubes (801) has a front end limiting block (802), and this front end limiting block (802) is fitted into the tubular cavity (702). A restoring spring (703) is fitted to the front end of the tubular cavity (702), one end of the restoring spring (703) is. Petition 870260050442, dated 05 / 26 / 2026, pages 44 / 50 19 / 22 rests on the front end wall of the tubular cavity (702), and the other end rests on the front end limiter block (802).

[0029] Using the present invention, the first clip body (12) and the second clip body (13) are loaded into the clip head. The first clip body (12) and the second clip body (13) are made of POM, an implantable polymeric material with good biocompatibility. The clip head is introduced into the human body through a small incision channel and visualized by thoracoscopy to encircle the left atrial appendage. Then, the relative angle between the clip head and the connecting tube (8) is adjusted by means of the clip head deflection mechanism, allowing the clip head to be positioned at the ideal angle to encircle the left atrial appendage, avoiding obstruction of the surgical operator's line of sight and providing the surgical operator with the best field of vision.When deflecting the clip head, simply rotate the deflection adjustment sleeve (5), and the relative rotational movement between the deflection adjustment sleeve (5) and the fixed handle (3) is converted into axial movement by means of the thread. The step on the inner wall of the central hole of the deflection adjustment sleeve (5) pushes the movement of the traction head (701) of the deflection transmission element (7), causing the deflection transmission element (7) to produce a force of. Petition 870260050442, dated 05 / 26 / 2026, pages 45 / 50 20 / 22 axial traction, which is transmitted to the clip head, providing energy for the deflection of the clip head. Hold the handle (302) and the gripping handle (4) with your hand and squeeze the gripping handle (4). The gripping handle (4) moves the end of the gripping transmission element (6) towards the handle (302). The gripping transmission element (6) pulls the movable clip arm (1) to slide and overcome the restoring force of the elastic band (14), gradually approaching the upper edge of the clip head frame (9). When the first clip body (12) and the second clip body (13) meet, the elastic locking teeth (1201) engage with the tooth grooves (1301), and the first clip body (12) and the second clip body (13) close, performing the occlusion of the left atrial appendage, with the two clip bodies connected to each other by means of the clip locking structure.After the first clip body (12) and the second clip body (13) close the clip system to secure the left atrial appendage, first release the clamping handle (4), the traction force of the clamping transmission element (6) disappears, and the elastic band (14) restores the movable clip arm (1). As the second clip body (13) is constrained to the clip head frame (9) by the C-shaped elastic blade (904), it cannot move with the first clip body (12), and the binding force between the first clip body (12) and the second clip body. Petition 870260050442, dated 05 / 26 / 2026, pages 46 / 50 21 / 22 (13) is greater than the bonding force between the first clip body (12) and the movable clip arm, therefore, the first clip body (12) is removed from the movable clip arm (1) by the second clip body (13). Then, press the release handle (10), actuating the unlocking pull cable (202). The unlocking pull cable (202) pulls the release slide block (2) to slide into the sliding guide groove (903), and the part of the inclined surface (201) on the back of the release slide block (2) that comes into contact with the C-shaped elastic blade (904) gradually 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 blade (904) increases progressively until the C-shaped elastic blade (904) opens so that it can no longer hold the second clip body (13).The second clip body (13) is then released from the constraint with the release slide block (2) and detaches from the release slide block (2), so that the first clip body (12) and the second clip body (13) are completely detached from the clip head.

[0030] EXAMPLE 2: The clip locking structure comprises tooth grooves located at both ends of the first clip body (12) and elastic locking teeth located at both ends of the second clip body (13), which Petition 870260050442, dated 05 / 26 / 2026, pages 47 / 50 22 / 22 can fit with the tooth grooves. The rest is the same as Example 1. Petition 870260050442, dated 05 / 26 / 2026, pages 48 / 50

Claims

1 / 5 Claims 1. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, characterized by comprising a clip head and a clip application device, wherein the clip application device comprises a fixed handle (3), a clamping handle (4), a deflection adjustment sleeve (5), a clamping transmission element (6), a deflection transmission element (7) and a connecting tube (8), the clamping handle (4) is slidingly connected to the fixed handle (3), the deflection adjustment sleeve (5) is threaded into the fixed handle (3), the clamping transmission element (6) is connected between the clamping handle (4) and the clip head, 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), the clamping transmission element (6) and the deflection transmission element (7) passes through the connecting tube (8),and a clip head deflection mechanism actuated by the deflection transmission element (7) is provided between the clip head and the clip application device.

2. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 1, characterized in that the fixed handle (3) comprises a handle rod (301), the clamping handle (4) is slidably fitted into the handle rod (301), a traction groove (303) is provided on the circumferential surface of the handle rod (301) axially along the handle rod (301), and the end of the clamping transmission element (6) is fixedly connected to the clamping handle (4).

3. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 2, characterized in that the clamping transmission element (6) is connected to the clamping handle (4) by means of a pin (401) fixed to the clamping handle (4).

4. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 2, characterized in that the inner wall of the central hole of the deflection adjustment sleeve (5) has a step, the rear end of the deflection transmission element (7) has a traction head (701), the traction head (701) has a pair of radially fixed traction pins (704), the traction pins (704) pass through the traction groove (303) and extend out of the traction groove (303), and the part of the traction pins (704) exposed outside the traction groove (303) is fitted into the step of the inner wall of the central hole of the deflection adjustment sleeve (5).

5. “SPLIT TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 1, characterized in that the clamping transmission element (6) is a traction cable, which passes through the deflection transmission element (7), and the deflection transmission element (7) passes through the handle rod (301).

6. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 1, characterized in that the clip head comprises a movable clip arm (1) and a clip head frame (9), a first clip body (12) is removablely connected to the movable clip arm (1), a second clip body (13) is removablely connected to the edge of the clip head frame (9) opposite the movable clip arm (1), a clip locking structure is provided between the first clip body (12) and the second clip body (13), the movable clip arm (1) is slidingly connected within the clip head frame (9) and connected to the clamping transmission element (6), and an elastic band (14) is provided between the movable clip arm (1) and the clip head frame (9) to restore the movable clip arm (1).

7. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 6, characterized in that the clip head deflection mechanism comprises a connecting seat with eyelets (901) and a deflection thrust rod (902), the connecting seat with eyelets (901) Petition 870250054059, dated 06 / 26 / 2025, page 53 / 61 4 / 5 is provided in the clip head frame (9), the connecting seat with eyelets (901) is articulated to the end of the connecting tube (8), one end of the deflection thrust rod (902) is articulated to the connecting seat with eyelets (901), and the other end of the deflection thrust rod (902) is articulated to the deflection transmission element (7).

8. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 6, characterized in that the edge of the clip head frame (9) has a sliding guide groove (903), a sliding release block (2) is slidingly connected within the sliding guide groove (903), a C-shaped elastic blade (904) is fitted to the edge of the clip head frame (9), the second clip body (13) is attached to the inner part of the edge of the clip head frame (9) by the restraint of the C-shaped elastic blade (904), the rear part of the sliding release block (2) has an inclined surface that contacts the C-shaped elastic blade (904), a release pull cable (202) is connected to the sliding release block (2), the release pull cable (202) passes through the connecting tube (8) and is connected to a release handle. (10),and the release handle (10) is articulated to a release handle ring (11), the release handle ring (11) is fixed to the fixed handle (3). Petition 870250054059, dated 06 / 26 / 2025, page 54 / 61 5 / 5, 9. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to claim 6, characterized in that the material of the first clip body (12) and the second clip body (13) is POM.

10. “SPLIT-TYPE LEFT ATRIAL APPENDIX OCCLUSION CLIP SYSTEM”, according to any one of claims 1 to 9, characterized in that the connecting tube (8) comprises two half-section tubes (801), the two half-section tubes (801) being joined together. Petition 870250054059, dated 06 / 26 / 2025, pp. 55 / 61

Images