Split type conveying actuator and conveying device

Abstract

The invention relates to a split type conveying actuator. The split type conveying actuator comprises clamp arms and a split type parallel opening and closing mechanism. The number of the clamp arms is two, and the two clamp arms are connected with the split type parallel opening and closing mechanism in a pivoted mode. The split type parallel opening and closing mechanism comprises a pivoting seat and a swinging arm; the pivoting seat is arranged between the two clamp arms; the swinging arms are pivotally connected with the pivoting seat, and the swinging arms can be symmetrically unfolded or folded around the center of the pivoting seat; the far ends of the swinging arms are pivotally connected with the corresponding clamp arms, and the near ends of the swinging arms are slidably connected with the corresponding clamp arms, so that the swinging arms are symmetrically unfolded or folded around the center of the pivoting seat, and the two clamp arms can be symmetrically opened or closed in parallel. Therefore, the size of the head end of the split type conveying actuator is reduced, the feeding difficulty is reduced, the split type conveying actuator can extend into the body of a patient in a minimally invasive mode, the operative wound is relatively small, bleeding is little, recovery is fast, a large operation space is not needed at the focus, and the operation difficulty and the overall risk are reduced. The invention further provides a conveying device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a split-type conveying actuator and a conveying device. Background Art

[0002] Atrial fibrillation is one of the most common arrhythmias in clinical practice. The consequences of stroke caused by atrial fibrillation are very serious, with a mortality rate and disability rate of 70%. For patients with valvular atrial fibrillation, 57% of atrial thrombi originate from the left atrial appendage, and for patients with non-valvular atrial fibrillation, 90% of left atrial thrombi originate from the left atrial appendage. Even after sinus rhythm is restored, the left atrial appendage contraction is suppressed, and thrombi may still form again.

[0003] At present, there are three main methods for preventing atrial fibrillation ischemic stroke in clinical practice. One method is to take anticoagulants, such as warfarin, but the use of warfarin has a certain risk of bleeding and requires frequent monitoring. It has many contraindications and is difficult to use clinically. In addition, warfarin may cause osteoporosis and soft tissue necrosis. The second method is to directly remove or ligate the left atrial appendage during cardiac surgery. The main disadvantage of this method is that the complete closure rate of the left atrial appendage is low. Previous studies have shown that the success rate of complete removal of the left atrial appendage is as high as about 80%. The third method is to close the left atrial appendage through a device, using percutaneous intracardiac left atrial appendage occlusion products, but the existing device structure is complex, the risk is high, and the safety and effectiveness need to be verified.

[0004] The delivery actuator of the existing atrial appendage clamp is generally provided with a slightly square outer frame at the front end to facilitate binding the atrial appendage clamp therein. The atrial appendage clamp includes two parallel clamp arms, and the two spring parts at both ends maintain the clamping of the two clamp arms. The outer frame of the delivery actuator uses a traction rope to pull the clamp arms of the atrial appendage clamp, so that the traction rope can be tightened to open the atrial appendage clamp, thereby driving the atrial appendage clamp to the lesion to perform the left atrial appendage extracardiac closure operation. However, the outer frame of the existing delivery actuator is large, making it difficult to deliver, and requires a large operating space at the lesion, which also makes the closure operation difficult and risky. Summary of the invention

[0005] The object of the present invention is to provide a split-type conveying actuator to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose of the present invention, the following technical scheme is adopted:

[0007] In a first aspect, the present application provides a split-type conveying actuator, including a clamp arm and a split-type parallel opening and closing mechanism;

[0008] There are two clamp arms, and the two clamp arms are pivotally connected to the split parallel opening and closing mechanism;

[0009] The parallel opening and closing mechanism comprises a pivot seat and a swing arm;

[0010] The pivot seat is arranged between the two clamp arms;

[0011] The swing arm is pivotally connected to the pivot seat, and the swing arm can be symmetrically unfolded or folded around the center of the pivot seat;

[0012] The distal end of the swing arm is pivotally connected to the corresponding clamp arm, and the proximal end of the swing arm is slidably connected to the corresponding clamp arm, so that the swing arm can be symmetrically unfolded or folded around the center of the pivot seat, which can cause the two clamp arms to open or close in parallel and symmetrically.

[0013] Furthermore, it also includes a driving mechanism, which is pivotally connected to the distal end or proximal end of the swing arm.

[0014] Furthermore, the swing arm includes two arm bodies, the two arm bodies are arranged in an X shape, and the two arm bodies are pivotally connected to the pivot seat.

[0015] Furthermore, a first accommodating space is provided in the pivot seat;

[0016] The swing arm is disposed in the first accommodation space and is pivotally connected to the pivot seat;

[0017] The surfaces of the two clamp arms facing the pivot seat are respectively provided with second accommodating spaces;

[0018] The distal end of the swing arm is arranged in the second accommodating space of the corresponding clamp arm and is pivotally connected to the clamp arm. The proximal end of the swing arm is arranged in the second accommodating space of the corresponding clamp arm and is slidably connected to the clamp arm.

[0019] Furthermore, each of the pliers arms comprises a pliers head, a transition seat and a connecting seat which are connected in sequence, the transition seat is protruding in the direction toward the pivot seat to form a protrusion, the height difference between the protrusion and the connecting seat is used to accommodate the corresponding side of the pivot seat, and the second accommodating space is arranged in the connecting seat.

[0020] Furthermore, a sliding groove communicating with the second accommodation space is provided on the side wall of the connecting seat;

[0021] The proximal end of the swing arm is slidably connected to the sliding groove on the corresponding clamp arm.

[0022] Furthermore, it also includes a support plate for the implant to be implanted, the support plate for the implant to be implanted is respectively mounted on the surfaces of the two clamp heads facing the pivot seat, and a positioning groove is provided between the protruding portion and the support plate for the implant to be implanted;

[0023] The notches of the positioning grooves of the two clamp heads are arranged opposite to each other to form a receiving groove for receiving the proximal end of the implant to be implanted;

[0024] An arc transition is adopted between the support plate for the object to be implanted and the clamp head.

[0025] Furthermore, each of the pliers heads is provided with threading holes on the surface facing away from the pivot seat, and the threading holes include a first threading hole and a second threading hole, the first threading hole passes through the pliers head and passes out from the pliers head toward the surface of the pivot seat, the second threading hole passes through the pliers head and the support plate to be implanted in sequence, and passes out from the support plate to be implanted toward the side wall of the first threading hole.

[0026] Furthermore, a wire guide groove is provided on a surface of each of the pliers heads facing away from the pivot seat, and the wire guide groove is connected to the first wire threading hole and the second wire threading hole.

[0027] Further, the driving mechanism comprises a control line and two driving arms, the two driving arms are arranged in the first accommodation space of the pivot seat, the proximal ends of the two driving arms are pivotally connected to the distal ends of the two arm bodies, the distal ends of the two driving arms overlap and are pivotally connected to form a closed end, and the closed end is slidably connected to the pivot seat;

[0028] The control line is connected to the closed end.

[0029] Further, a boss is provided on the inner wall of the first accommodation space of the pivot seat, the two arms are pivotally connected to the boss, and there is a certain distance between the boss and the distal end of the pivot seat, so that a slide groove can be provided on the inner wall of the first accommodation space of the pivot seat, and the slide groove is horizontally collinear with the boss but not connected;

[0030] The closed end is slidably connected to the slide groove.

[0031] Further, the driving mechanism comprises a push rod and two driving arms, the two driving arms are arranged in the first accommodation space of the pivot seat, the distal ends of the two driving arms are pivotally connected to the proximal ends of the two arm bodies, the proximal ends of the two driving arms overlap and are pivotally connected to form a closed end, and the closed end passes through the proximal end of the pivot seat;

[0032] The push rod is connected to the closed end.

[0033] Furthermore, a boss is provided on the inner wall of the first accommodating space of the pivot seat, and the two arms are pivotally connected to the boss;

[0034] The boss is provided with a slide groove;

[0035] The closed end is slidably connected to the slide groove.

[0036] Furthermore, a boss is provided on the inner wall of the first accommodating space of the pivot seat, and the two arms are pivotally connected to the boss;

[0037] A central limiting block is arranged in the lumen of the connecting rod of the operating handle connected to the pivot seat, and the push rod is arranged in the lumen and passes through the central limiting block to be connected to the closed end.

[0038] Furthermore, the opposing surfaces of the two driving arms are respectively provided with clearance grooves, and the opposing surfaces of the two arm bodies are respectively provided with clearance grooves.

[0039] Furthermore, a limiting rod is arranged on the boss.

[0040] Furthermore, a through hole or a through groove is provided at the proximal end of the pivot seat, and the through hole or the through groove is communicated with the first accommodating space.

[0041] Furthermore, the surfaces of the two clamp arms facing away from each other are arc-shaped surfaces.

[0042] In a second aspect, the present application provides a conveying device, including an operating handle and the above-mentioned split-type conveying actuator;

[0043] The split delivery actuator is used to connect to the object to be implanted;

[0044] The operating handle includes a connecting rod and a control mechanism, wherein the connecting rod is connected to the proximal end of the pivot seat;

[0045] The control mechanism passes through the lumen of the connecting rod, and the control mechanism is operably connected to the swing arm through a driving mechanism to operate the split-type conveying actuator.

[0046] By adopting the above technical solution, the present invention has the following beneficial effects:

[0047] The split-type delivery actuator of the present application is used for left atrial appendage closure operations. When in use, the two clamp arms can be prompted to open or close in parallel and symmetrically through the split-type parallel opening and closing mechanism. As a result, the head end size of the split-type delivery actuator can be reduced as much as possible, so that the split-type delivery actuator can be inserted into the patient's body through the incision for closing operation, and the difficulty of delivery is reduced. It can be inserted into the patient's body in a minimally invasive manner, so that the surgical trauma is relatively small, bleeding is less, recovery is fast, and no larger operating space is required at the lesion, thereby reducing the operational difficulty of this type of closure operation, and ultimately reducing the overall risk of this type of closure operation.

[0048] In addition, since the split-type conveying actuator of the present application has removed the existing rectangular auricle clamp fixing frame, the structure is simplified and the operation is convenient. Moreover, since the swing arm is symmetrically unfolded or folded around the center of the pivot seat, it has the characteristics of simple structure, convenient operation and stable operation. Therefore, by symmetrically unfolding or folding the swing arm around the center of the pivot seat, the two clamp arms are opened or closed in parallel and symmetrically, and the unfolding or folding of the swing arm has more stable operability, which can ensure that the movement of the two clamp arms is smooth and reliable during the process of opening or closing the two clamp arms in parallel and symmetrically. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, in which two clamp arms are opened in parallel and symmetrically from a first perspective;

[0051] Figure 2 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, with two clamp arms opened in parallel and symmetrically from a second viewing angle;

[0052] Figure 3 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, with two clamp arms opened in parallel and symmetrically from a third perspective;

[0053] Figure 4 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, in which two clamp arms are parallel and symmetrically closed from a first perspective;

[0054] Figure 5 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, in which the two clamp arms are parallel and symmetrically closed from a second perspective;

[0055] Figure 6 This is a schematic diagram of the structure of the split-type conveying actuator of the first embodiment, with two clamp arms being closed in parallel and symmetrically from a third perspective;

[0056] Figure 7 This is a schematic diagram of the positional relationship between the swing arm and the driving mechanism of the split conveying actuator of Example 1 when the two clamp arms are in a parallel and symmetrical closed state (the pivot seat is not shown);

[0057] Figure 8This is a schematic diagram of the positional relationship between the swing arm and the driving mechanism of the split-type conveying actuator of Example 1 when the two clamp arms are in a parallel and symmetrically opened state (the pivot seat is not shown);

[0058] Fig. 9 It is a structural schematic diagram of the pivot seat of the first embodiment;

[0059] Fig.10 This is a schematic diagram of the positional relationship between the two clamp arms and the object to be implanted when the two clamp arms are in a parallel and symmetrically opened state of the split-type delivery actuator of the first embodiment;

[0060] Fig.11 This is a schematic diagram of the positional relationship between the two clamp arms and the object to be implanted when the two clamp arms are in a parallel and closed state of the split-type delivery actuator of the first embodiment;

[0061] Fig.12 This is a schematic diagram of the connection relationship between the driving mechanism and the pivot seat of the split conveying actuator of the second embodiment; (the side of the pivot seat close to the outside is not shown);

[0062] Fig.13 It is a structural schematic diagram of the pivot seat of the first structure of the split-type conveying actuator of the second embodiment;

[0063] Fig.14 This is a schematic diagram of the connection relationship between the drive mechanism and the pivot seat of the second structure of the split conveying actuator of the second embodiment (the side of the pivot seat close to the outside is not shown);

[0064] Fig.15 It is a schematic structural diagram of a pivot seat of a second structure of the split-type conveying actuator of the second embodiment;

[0065] Fig.16 This is a schematic diagram of the connection relationship between the connecting rod of the operating handle of Example 3 and the pivot seat of the split-type conveying actuator.

[0066] Reference numerals: 1-clamp arm; 2-split parallel opening and closing mechanism; 21-pivot seat; 22-swing arm; 3-driving mechanism; 221-arm body; 4-first accommodating space; 5-connecting rod; 6-second accommodating space; 11-clamp head; 12-transition seat; 13-connecting seat; 14-protruding portion; 7-sliding groove; 8-sliding block; 9-supporting plate for implant; 10-positioning groove; 15-threading hole; 15 1-first threading hole; 152-second threading hole; 16-lead groove; 31-driving arm; 17-boss; 18-gap groove; 19-limiting rod; 211-through hole; 20-closed end; 32-push rod; 23-auricle clamp; 231-clamp arm; 232-elastic clamping member; 24-distal end; 25-proximal end; 26-connecting rod; 261-lumen; 27-center limiting block; 212-through groove. DETAILED DESCRIPTION

[0067] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Embodiment 1:

[0070] like Figure 1-Figure 11 As shown, the split-type conveying actuator of the present application includes a split-type parallel opening and closing mechanism 2 of a clamp arm 1;

[0071] There are two clamp arms 1, which are arranged in parallel and are pivotally connected to the split parallel opening and closing mechanism 2;

[0072] The parallel opening and closing mechanism 2 includes a pivot seat 21 and a swing arm 22;

[0073] The pivot seat 21 is arranged parallel to the two clamp arms 1;

[0074] The swing arm 22 is pivotally connected to the pivot seat 21, and the swing arm 22 can be symmetrically unfolded or folded around the center of the pivot seat 21;

[0075] The distal end 24 of the swing arm 22 is pivotally connected to the corresponding clamp arm 1, and the proximal end 25 of the swing arm 22 is slidingly connected to the corresponding clamp arm 1, so that the swing arm 22 can be symmetrically unfolded or folded around the center of the pivot seat 21, which can cause the two clamp arms 1 to open or close in parallel and symmetrically.

[0076] The split-type delivery actuator of the present application is used for left atrial appendage closure operations. When in use, the two clamp arms 1 can be prompted to open or close in parallel and symmetrically through the split-type parallel opening and closing mechanism 2. As a result, the head end size of the split-type delivery actuator can be reduced as much as possible, so that the split-type delivery actuator can be inserted into the patient's body through the incision for closing operation, and the difficulty of delivery is reduced. It can be inserted into the patient's body in a minimally invasive manner, so that the surgical trauma is relatively small, bleeding is less, and recovery is fast. In addition, a larger operating space is not required at the lesion site, thereby reducing the operational difficulty of this type of closure operation, and ultimately reducing the overall risk of this type of closure operation.

[0077] In addition, since the split-type conveying actuator of the present application has removed the existing rectangular auricle clamp fixing frame, the structure is simplified and the operation is convenient. Moreover, since the swing arm 22 is symmetrically unfolded or folded around the center of the pivot seat 21, it has the characteristics of simple structure, convenient operation and stable operation. Therefore, by symmetrically unfolding or folding the swing arm 22 around the center of the pivot seat 21, the unfolding or folding of the swing arm 22 has more stable operability during the process of the two clamp arms 1 being opened or closed in parallel and symmetrically, and it can be ensured that the movement process of the two clamp arms 1 is smooth and reliable during the process of the two clamp arms 1 being opened or closed in parallel and symmetrically.

[0078] Specifically, it also includes a driving mechanism 3 , which is pivotally connected to the distal end 24 of the swing arm 22 .

[0079] In actual use, in order to more conveniently control the unfolding or folding of the swing arm 22, the present application adds a driving mechanism 3 for controlling the unfolding or folding of the swing arm 22.

[0080] Specifically, the swing arm 22 includes two arm bodies 221 , which are arranged in an X shape and are pivotally connected to the pivot seat 21 .

[0081] Specifically, a first accommodating space 4 is provided in the pivot seat 21, the swing arm 22 is provided in the first accommodating space 4, two arm bodies 221 of the swing arm 22 are pivotally connected to the pivot seat 21 through a connecting rod 5, and second accommodating spaces 6 are respectively provided on the surfaces of the two clamp arms 1 facing the pivot seat 21;

[0082] The distal ends 24 of the two arm bodies 221 of the swing arm 22 are arranged in the second accommodating space 6 of the corresponding clamp arm 1 and are pivotally connected to the clamp arm 1. Preferably, a connecting rod 5 is provided on the distal ends 24 of the two arm bodies 221, and is pivotally connected to the corresponding clamp arm 1 through the connecting rod 5. The proximal ends 25 of the two arm bodies 221 of the swing arm 22 are arranged in the second accommodating space 6 of the corresponding clamp arm 1 and are slidably connected to the clamp arm 1. The proximal ends 25 of the two arm bodies 221 can slide along the length direction of the clamp arm 1.

[0083] In order to further reduce the size of the head end of the split-type conveying actuator (the head end can also be understood as the distal end 24 of the split-type conveying actuator), the present application provides a first accommodating space 4 in the pivot seat 21, and second accommodating spaces 6 are respectively provided on the surfaces of the two clamp arms 1 facing the pivot seat 21. Through the coordinated use of the first accommodating space 4 and the second accommodating space 6, movement space is reserved for the swing arm 22, that is, when the two clamp arms 1 need to be opened in parallel and symmetrically, the setting of the first accommodating space 4 and the second accommodating space 6 provides movement space for the unfolding of the X-shaped arm body 221; when the two clamp arms 1 need to be closed in parallel and symmetrically, the setting of the first accommodating space 4 and the second accommodating space 6 provides movement space for the folding of the X-shaped arm body 221, and can also serve to store the X-shaped arm body 221.

[0084] The above arrangement fully utilizes the space of the pivot seat 21 and the two clamp arms 1, and provides a structural basis for reducing the size of the head end of the split-type conveying actuator.

[0085] Preferably, the length direction of the first accommodating space 4 is consistent with the length direction of the pivot seat 21, and the length direction of the second accommodating space 6 is consistent with the length direction of the clamp arm 1. Such a setting can ensure better cooperation with the two arm bodies 221 and ensure that the first accommodating space 4 and the second accommodating space 6 will not interfere with the movement of the two arm bodies 221.

[0086] Specifically, each pliers arm 1 includes a pliers head 11, a transition seat 12 and a connecting seat 13 connected in sequence. The surface of the transition seat 12 is away from the pivot seat 21 and is arranged flush with the surface of the connecting seat 13 away from the pivot seat 21. The transition seat 12 is protruded in the direction toward the pivot seat 21 to form a protrusion 14. The height difference between the protrusion 14 and the connecting seat 13 is used to accommodate the corresponding side of the pivot seat 21. A second accommodating space 6 is arranged in the connecting seat 13.

[0087] The drop between the protrusion 14 and the connecting seat 13 of the present application is used to accommodate the corresponding side of the pivot seat 21, thereby ensuring that the drop between the protrusion 14 and the connecting seat 13 will not interfere with the corresponding side of the pivot seat 21; the drop between the protrusion 14 and the clamp head 11 is used to limit the installation position of the implant on the clamp head 11, improve the accuracy of the installation position of the implant on the clamp head 11, prevent the installation position of the implant on the two clamp arms 1 from changing, and affect the subsequent operation, thereby improving the success rate of the operation.

[0088] Specifically, a slide groove 7 communicating with the second accommodating space 6 is disposed on the side wall of the connecting seat 13 , and a slider 8 cooperating with the slide groove 7 on the corresponding clamp arm 1 is disposed at the proximal end 25 of the two arm bodies 221 .

[0089] Preferably, the slide groove 7 is consistent with the length direction of the second accommodating space 6 , so that the proximal ends 25 of the two arm bodies 221 can slide along the length direction of the clamp arm 1 .

[0090] Specifically, it also includes a support plate 9 for an implant to be implanted, which is respectively mounted on the surfaces of the two clamp heads 11 facing the pivot seat 21, and a positioning groove 10 is provided between the protrusion 14 and the support plate 9 for an implant to be implanted;

[0091] The notches of the positioning slots 10 of the two forceps heads 11 are arranged opposite to each other to form a receiving slot for receiving the proximal end 25 of the object to be implanted.

[0092] The present application installs implant support plates 9 on the surfaces of the two pliers heads 11 facing the pivot seat 21 respectively. The implant support plates 9 on the two pliers heads 11 are used together to support the implant and prevent the implant from falling off between the two pliers heads 11.

[0093] The drop between the protrusion 14 and the clamp head 11 is used to limit the installation position of the implant to be treated on the clamp head 11. This structure can only serve as a limit for the proximal end 25 of the implant to be treated but does not have a fixing function. Therefore, based on the above structure, a positioning groove 10 is provided between the drop between the protrusion 14 and the clamp head 11 and the support plate 9 to be treated. The notches of the positioning grooves 10 of the two clamp heads 11 are arranged relatively to form a receiving groove for accommodating the proximal end 25 of one end of the implant to be treated. The receiving groove cooperates with the drop between the protrusion 14 and the clamp head 11, which can not only limit the installation position of the implant to be treated on the clamp head 11, but also fix the implant to be treated.

[0094] Preferably, the distal end 24 of the support plate 9 to be implanted is flush or non-flush with the distal end 24 of the forceps head 11. The present application adopts that the distal end 24 of the support plate 9 to be implanted is flush with the distal end 24 of the forceps head 11.

[0095] Preferably, an arc transition setting is adopted between the support plate 9 of the implant and the clamp head 11, which can prevent the implant from being scratched to the greatest extent during the process of installing the implant between the two clamp arms 1. Since the implant needs to be implanted in the human body, the overall structure of the implant is relatively precise, and any external abrasions may affect the structural strength of the implant. Through the above setting, the occurrence of external factors affecting the structural strength and integrity of the implant is avoided.

[0096] Specifically, each pliers head 11 is provided with a threading hole 15 on the surface facing away from the pivot seat 21, and the threading holes 15 are distributed along the length direction of the pliers head 11. The threading holes 15 include a first threading hole 151 and a second threading hole 152. The first threading hole 151 penetrates the pliers head 11 and passes out from the pliers head 11 toward the surface of the pivot seat 21, and the second threading hole 152 penetrates the pliers head 11 and the support plate 9 to be implanted in turn, and passes out from the side wall of the support plate 9 to be implanted toward the first threading hole 151.

[0097] In the process of fixing the implant on the two clamp heads 11, in order to facilitate the routing of the binding wire (not shown), the present application provides threading holes 15 on the surface of each clamp head 11 away from the pivot seat 21. The threading holes 15 are distributed along the length direction of the clamp head 11. The binding wire passes through the first threading hole 151 and the second threading hole 152 to bind the implant to the clamp head 11 on the corresponding side, thereby realizing the binding connection between the implant and the two clamp heads 11.

[0098] It should be noted that the method of connecting the implant to the clamp head 11 by binding wire is a prior art and will not be described in detail here.

[0099] Specifically, a wire guide groove 16 is provided on the surface of each clamp head 11 away from the pivot seat 21 . The wire guide groove 16 is provided along the length direction of the clamp head 11 . The wire guide groove 16 is connected to the first wire threading hole 151 and the second wire threading hole 152 .

[0100] On the basis that the above-mentioned threading holes 15 include the first threading hole 151 and the second threading hole 152, in order to further facilitate the routing of the binding wire (not shown) and prevent the binding wire from being exposed, the present application provides a wire guide groove 16 on the surface of each clamp head 11 away from the pivot seat 21, and the wire guide groove 16 is connected to the first wire guide hole 151 and the second wire guide hole 152 of each group of wire guide holes 15, so that the binding wire can be hidden in the wire guide groove 16, and the binding wire enters the clamp head 11 through the first wire guide hole 151 and the second wire guide hole 152 of each group of wire guide holes 15, thereby achieving the purpose of hiding the routing of the binding wire.

[0101] Specifically, the driving mechanism 3 includes a control line (not shown) and two driving arms 31, and the two driving arms 31 are arranged in the first accommodating space 4 of the pivot seat 21. The proximal ends 25 of the two driving arms 31 are pivotally connected to the distal ends 24 of the two arm bodies 221 through the connecting rod 5. The distal ends 24 of the two driving arms 31 overlap and are pivotally connected to form a closed end 20, and the closed end 20 is slidingly connected to the pivot seat 21. The proximal end 25 of the pivot seat 21 is provided with a through hole 211, and the through hole 211 is connected to the first accommodating space 4; the control line passes through the through hole 211 and is connected to the closed end 20.

[0102] In addition to the above-mentioned function of controlling the wire passing through, the through hole 211 has another function, that is, the binding wire of the operating handle enters the guide groove 16 of each clamp head 11 from the 5 through holes 211 of the pivot seat 21, and the binding wire (not shown) passes through the first threading hole 151 and the second threading hole 152 respectively to bind the implant to the corresponding clamp head 11.

[0103] Specifically, a boss 17 is provided on the inner wall of the first accommodating space 4 of the pivot seat 21, and the two arm bodies 221 of the swing arm 22 are pivotally connected to the boss 17 through the connecting rod 5. There is a certain distance between the boss 17 and the distal end 24 of the pivot seat 21, so that a slide groove 7 can be provided on the inner wall of the first accommodating space 4 of the pivot seat 21, and the slide groove 7 is horizontally collinear with the boss 17 but not connected; the closed end 20 is slidably connected to the slide groove 7, and a slider 8 cooperating with the slide groove 7 is provided on the closed end 20.

[0104] Through the setting of the slide groove 7, the closed ends 20 of the two driving arms 31 can be guided along the slide groove 7, so that the two driving arms 31 are prompted to unfold or fold symmetrically. The two driving arms 31 that are symmetrically unfolded or folded cause the two arm bodies 221 to unfold or fold symmetrically. The two arm bodies 221 that are symmetrically unfolded or folded cause the two clamp arms 1 to open or close in parallel and symmetrically.

[0105] Specifically, the two driving arms 31 are provided with clearance grooves 18 on their opposite surfaces, and the two arm bodies 221 are provided with clearance grooves 18 on their opposite surfaces.

[0106] By providing the clearance grooves 18 on the opposite surfaces of the two driving arms 31 , interference between the two driving arms 31 during the relative rotation is prevented.

[0107] By providing the clearance grooves 18 on the opposite surfaces of the two arm bodies 221, the two arm bodies 221 are prevented from interfering with each other during the relative rotation.

[0108] Specifically, a limit rod 19 is provided on the boss 17 .

[0109] Preferably, the axis direction of the limiting rod 19 is perpendicular to the length direction of the boss 17 .

[0110] In order to limit the opening angle of the two arm bodies 221 of the swing arm 22, the present application installs a limit rod 19 on the boss 17 of the pivot seat 21. When any arm body 221 hits the limit rod 19, the two arm bodies 221 reach the maximum opening and closing angle. At this time, the two clamp arms 1 are in the extreme position of parallel and symmetrical opening state.

[0111] It should be noted that the maximum opening and closing angle of the two arms 221 can be adjusted by adjusting the installation position of the limit rod 19 on the boss 17, thereby adjusting the vertical distance between the two clamp arms 1 when they are in a parallel and symmetrical open state.

[0112] Specifically, the surfaces of the two clamp arms 1 that face away from each other are arc-shaped surfaces, so that the external shape of the split-type conveying actuator of the present application is smoothly set to avoid the external shape of the split-type conveying actuator of the present application damaging human organs during the conveying operation, and also facilitate the split-type conveying actuator of the present application to enter or leave the human body.

[0113] See also Fig.10 and Fig.11 The object to be implanted is an atrial appendage clamp 23, which includes a clamp arm 231 and an elastic clamping member 232. The clamp arm 231 is arranged in two parallel portions, and the two ends of the clamp arm 231 are connected as a whole through the elastic clamping member 232.

[0114] Furthermore, the elastic clamping member 232 is an elastic clamping arm.

[0115] When in use, the two clamp arms 231 of the auricle clamp 23 are supported by the corresponding support plate 9 for the implant, and the accommodating groove 10 arranged opposite to the notch forms a accommodating groove for accommodating the proximal end 25 of the implant, which limits and fixes one of the elastic clamping members 232.

[0116] The binding wire passes through the first threading hole 151 and the second threading hole 152 to bind the two clamp arms 231 of the auricle clamp 23 to the corresponding clamp head 11 respectively, thereby realizing the binding connection between the auricle clamp 23 and the clamp head 11.

[0117] The working process of the split-type conveying actuator of the first embodiment is as follows:

[0118] The two clamp arms 231 of the atrial appendage clamp 23 are supported by the support plate 9 to be implanted, and the proximal end 25 of the atrial appendage clamp 23 is limited and fixed by the accommodating groove. The binding wire passes through the first threading hole 151 and the second threading hole 152 to bind the two clamp arms 231 of the atrial appendage clamp 23 between the two clamp arms 1. Under the closing force of the atrial appendage clamp 23 itself, the two clamp arms 1 are in a closed state. Since the split-type delivery actuator of the present application removes the existing rectangular atrial appendage clamp fixing frame, the split-type delivery actuator of the present application can be inserted into the patient's body in a minimally invasive manner with the help of a poking card, without the need for open-chest surgery.

[0119] During use, a delivery stamp is first implanted in the patient's body to establish a channel, and then the split delivery actuator enters the patient's body through the delivery stamp, pulling the control line, which acts on the closed end 20. The tension on the control line directly acts on the closed ends 20 of the two driving arms 31. The control line causes the closed ends 20 to slide along the slide groove 7 in the pivot seat 21 toward the direction of the proximal end 25 close to the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 gradually and symmetrically unfold from the first accommodating space 4 and the second accommodating space 6. The gradually symmetrically unfolded two driving arms 31 cause the proximal ends 25 of the two arm bodies 221 to move toward the direction of the distal ends 24 of the two arm bodies 221. The sliding shortens the distance between the proximal ends 25 of the two arms 221 and the distal ends 24 of the two arms 221, thereby adjusting the angle between the two arms 221, and realizing the gradual symmetrical expansion of the two arms 221. The gradual symmetrical expansion of the two arms 221 causes the two clamp arms 1 to move away from each other, thereby causing the two clamp arms 1 to open in parallel and symmetrically, thereby driving the two clamp arms 231 of the atrial appendage clamp 23 to open in parallel and symmetrically. After the opened atrial appendage clamp 23 is placed at the root of the left atrial appendage, the atrial appendage clamp 23 is closed, the binding wire is pulled out, the two clamp arms 231 of the atrial appendage clamp 23 are separated from the two clamp arms 1, the atrial appendage clamp 23 remains in the body, and the split transport actuator is withdrawn.

[0120] After the atrial appendage clamp 23 is released, the two clamp arms 1 are in a parallel free opening and closing state. During the process of withdrawing the split transport actuator from the patient's body, a return spring can be installed between the two arm bodies 221. Therefore, after the atrial appendage clamp 23 is released, the closing force of the return spring directly acts on the closed ends 20 of the two driving arms 31 through the two arm bodies 221, prompting the closed ends 20 to slide along the slide groove 7 of the pivot seat 21 in the direction away from the proximal end 25 of the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 are gradually folded symmetrically and stored in the first accommodating space 4 and the second accommodating space 6, and gradually folded symmetrically. The two stacked driving arms 31 cause the proximal ends 25 of the two arm bodies 221 to slide in the direction away from the distal ends 24 of the two arm bodies 221, so that the distance between the proximal ends 25 of the two arm bodies 221 and the distal ends 24 of the two arm bodies 221 becomes longer, thereby adjusting the angle between the two arm bodies 221, and then realizing the gradual symmetrical folding of the two arm bodies 221 and storing them in the first accommodating space 4 and the second accommodating space 6. The two arm bodies 221 are gradually symmetrically folded, so that the two forceps arms 1 move in the direction of approaching each other, thereby causing the two forceps arms 1 to close in parallel and symmetrically, so as to facilitate the withdrawal of the card from the patient's body through the transport punch.

[0121] Embodiment 2:

[0122] The split conveying actuator of the second embodiment of the present application is different from the first embodiment in that the connection relationship between the driving mechanism 3 and the pivot seat 21 is different from that of the first embodiment. The connection relationship between the driving mechanism 3 and the pivot seat 21 of the second embodiment has two structures. The first structure is as follows: Fig.12 , Fig.13 As shown, the second structure is Fig.14 , Fig.15 shown.

[0123] The first structure is introduced below. Fig.12 , Fig.13 As shown, the split-type conveying actuator of the second embodiment: the driving mechanism 3 includes a push rod 32 and two driving arms 31, the two driving arms 31 are arranged in the first accommodating space 4 of the pivot seat 21, the distal ends 24 of the two driving arms 31 are pivotally connected to the proximal ends 25 of the two arm bodies 221 through the connecting rod 5, the proximal ends 25 of the two driving arms 31 overlap and are pivotally connected to form a closed end 20, the proximal end 25 of the pivot seat 21 is provided with a through groove 212 connected to the first accommodating space 4, and the closed end 20 passes through the proximal end 25 of the pivot seat 21 through the through groove 212; the push rod 32 is connected to the closed end 20.

[0124] In addition to the above-mentioned function of being used for the closed end 20 to pass through, the through slot 212 has another function, namely, the binding wire of the operating handle enters the guide groove 16 of each clamp head 11 from the through slot 212 of the pivot seat 21, and the binding wire (not shown) passes through the first threading hole 151 and the second threading hole 152 respectively to bind the implant to the corresponding clamp head 11.

[0125] Specifically, a boss 17 is provided on the inner wall of the first accommodation space 4 of the pivot seat 21, and two arm bodies 221 of the swing arm 22 are pivotally connected to the boss 17 through a connecting rod 5;

[0126] The boss 17 is provided with a slide groove 7;

[0127] The closed end 20 is slidably connected to the slide groove 7 , and a slider 8 matching with the slide groove 7 is provided on the closed end 20 .

[0128] By setting the slide groove 7, the closed ends 20 of the two driving arms 31 can be guided along the slide groove 7, so that the two driving arms 31 can be symmetrically unfolded or folded. The two driving arms 31 that are symmetrically unfolded or folded can cause the two arm bodies 221 to be symmetrically unfolded or folded. The two arm bodies 221 that are symmetrically unfolded or folded can cause the two clamp arms 1 to maintain a parallel and symmetrical state when opening or closing.

[0129] The working process of the split conveying actuator adopting the first structure mentioned above is:

[0130] The two clamp arms 231 of the atrial appendage clamp 23 are supported by the support plate 9 to be implanted, and the proximal end 25 of the atrial appendage clamp 23 is limited and fixed by the accommodating groove. The binding wire passes through the first threading hole 151 and the second threading hole 152 to bind the two clamp arms 231 of the atrial appendage clamp 23 between the two clamp arms 1. Under the closing force of the atrial appendage clamp 23 itself, the two clamp arms 1 are in a closed state. Since the split-type delivery actuator of the present application removes the existing rectangular atrial appendage clamp fixing frame, the split-type delivery actuator of the present application can be inserted into the patient's body in a minimally invasive manner with the help of a poking card, without the need for open-chest surgery.

[0131] During use, a delivery stamp is first implanted in the patient's body to establish a channel, and then the split delivery actuator enters the patient's body through the delivery stamp, pushing the push rod 32. The thrust exerted on the push rod 32 directly acts on the closed ends 20 of the two driving arms 31. The push rod 32 causes the closed ends 20 to slide along the slide groove 7 in the pivot seat 21 toward the direction close to the distal end 24 of the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 gradually and symmetrically unfold from the first accommodating space 4 and the second accommodating space 6. The gradually symmetrically unfolded two driving arms 31 cause the proximal ends 25 of the two arm bodies 221 to slide toward the distal ends 24 of the two arm bodies 221, so that the two driving arms 31 gradually and symmetrically unfold, so that the two driving arms 31 gradually and symmetrically unfold, so that the proximal ends 25 of the two arm bodies 221 slide toward the distal ends 24 of the two arm bodies 221, so that the two driving arms 31 gradually and symmetrically unfold ... two driving arms 31 gradually and symmetrically unfold, so that the two driving arms 31 gradually and symmetrically unfold, so that the two driving arms 31 gradually and symmetrically unfold, so that the two driving arms 31 gradually and symmetrically unfold, so that the two driving arms 31 gradually and symmetrically unfold, so that the two driving The distance between the proximal end 25 of each arm 221 and the distal end 24 of the two arm bodies 221 becomes shorter, thereby adjusting the angle between the two arm bodies 221, and further realizing the gradual symmetrical expansion of the two arm bodies 221. Through the gradual symmetrical expansion of the two arm bodies 221, the two clamp arms 1 can be moved in the direction away from each other, thereby prompting the two clamp arms 1 to open in parallel and symmetrically, thereby driving the two clamp arms 231 of the atrial appendage clamp 23 to open in parallel and symmetrically. After the opened atrial appendage clamp 23 is placed at the root of the left atrial appendage, the atrial appendage clamp 23 is closed, the binding wire is pulled out, the two clamp arms 231 of the atrial appendage clamp 23 are separated from the two clamp arms 1, the atrial appendage clamp 23 remains in the body, and the split transport actuator is withdrawn.

[0132] After the atrial appendage clamp 23 is released, the two clamp arms 1 are in a parallel free opening and closing state. During the process of withdrawing the split transport actuator from the patient's body, the push rod 32 is pulled in the opposite direction. The pulling force exerted on the push rod 32 directly acts on the closed ends 20 of the two driving arms 31 through the two arm bodies 221, causing the closed ends 20 to slide along the slide groove 7 in the pivot seat 21 in the direction away from the distal end 24 of the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 are gradually folded symmetrically and stored in the first accommodating space 4 and the second accommodating space 6. The two driving arms 31 are gradually folded symmetrically. The proximal ends 25 of the two arm bodies 221 are caused to slide in a direction away from the distal ends 24 of the two arm bodies 221, so that the distance between the proximal ends 25 of the two arm bodies 221 and the distal ends 24 of the two arm bodies 221 becomes longer, thereby adjusting the angle between the two arm bodies 221, and then realizing the gradual symmetrical folding of the two arm bodies 221 and storing them in the first accommodating space 4 and the second accommodating space 6. The two arm bodies 221 are gradually symmetrically folded, so that the two forceps arms 1 move in a direction close to each other, thereby causing the two forceps arms 1 to close in parallel and symmetrically, so as to facilitate the withdrawal of the card from the patient's body through the transport punch.

[0133] In addition to the above-mentioned manner in which the closed end 20 and the slide groove 7 are slidably matched, a second structure can also be used as a replacement. The second structure is described below. Fig.14 , Fig.15 As shown, a boss 17 is provided on the inner wall of the first accommodation space 4 of the pivot seat 21, and two arm bodies 221 of the swing arm 22 are pivotally connected to the boss 17 through a connecting rod 5;

[0134] A central limiting block 27 is provided in the lumen 261 of the connecting rod 26 of the operating handle connected to the pivot seat 21 , and the push rod 32 passes through the central limiting block 27 and is connected to the closed end 20 , and the closed end 20 is connected to the push rod 32 via the connecting rod 5 .

[0135] By setting the center limit block 27, the push rod 32 can be guided along the axial direction of the connecting rod 26. The push rod 32 prompts the closed ends 20 of the two driving arms 31 to be guided along the axial direction of the connecting rod 26, prompting the two driving arms 31 to unfold or fold symmetrically. The two driving arms 31 that unfold or fold symmetrically prompt the two arm bodies 221 to unfold or fold symmetrically. The two arm bodies 221 that unfold or fold symmetrically prompt the two clamp arms 1 to open or close in parallel and symmetrically.

[0136] Compared with the sliding cooperation between the closed end 20 and the slide groove 7 of the first structure, the way in which the center limit block 27 and the push rod 32 of the second structure are matched is different in the guiding method. The second structure guides the movement direction of the push rod 32 by the center limit block 27, and the push rod 32 guides the movement direction of the closed end 20. Under the action of the push rod 32, the two driving arms 31 are prompted to symmetrically unfold or fold.

[0137] The first structure is to guide the movement direction of the closed ends 20 by cooperating with the slide groove 7 of the two driving arms 31. Under the action of the slide groove 7, the two driving arms 31 are prompted to symmetrically unfold or fold.

[0138] The two guiding methods mentioned above are both intended to ensure the symmetrical unfolding or folding of the two driving arms 31. Only when the two driving arms 31 can be symmetrically unfolded or folded can the two arm bodies 221 be symmetrically unfolded or folded. Only when the two arm bodies 221 are symmetrically unfolded or folded can the two clamp arms 1 be opened or closed in parallel and symmetrically.

[0139] The working process of the split conveying actuator adopting the second structure is:

[0140] The two clamp arms 231 of the atrial appendage clamp 23 are supported by the support plate 9 to be implanted, and the proximal end 25 of the atrial appendage clamp 23 is limited and fixed by the accommodating groove. The binding wire passes through the first threading hole 151 and the second threading hole 152 to bind the two clamp arms 231 of the atrial appendage clamp 23 between the two clamp arms 1. Under the closing force of the atrial appendage clamp 23 itself, the two clamp arms 1 are in a closed state. Since the split-type delivery actuator of the present application removes the existing rectangular atrial appendage clamp fixing frame, the split-type delivery actuator of the present application can be inserted into the patient's body in a minimally invasive manner with the help of a poking card, without the need for open-chest surgery.

[0141] During use, a delivery stamp is first implanted in the patient's body to establish a channel, and then the split delivery actuator enters the patient's body through the delivery stamp, pushing the push rod 32. The thrust exerted on the push rod 32 directly acts on the closed ends 20 of the two driving arms 31. Since the push rod 32 is limited by the central limit block 27, the push rod 32 can only move along the axial direction of the connecting rod 26. The push rod 32 prompts the closed end 20 to move toward the direction close to the distal end 24 of the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 gradually and symmetrically expand from the first accommodating space 4 and the second accommodating space 6. The gradually symmetrically expanded two driving arms 31 prompt the proximal ends 25 of the two arm bodies 221 to move toward the distal ends 24 of the two arm bodies 221. The distal end 24 slides in the direction of the distal end 24, so that the distance between the proximal end 25 of the two arms 221 and the distal end 24 of the two arms 221 becomes shorter, thereby adjusting the angle between the two arms 221, and then realizing the gradual symmetrical expansion of the two arms 221. Through the gradual symmetrical expansion of the two arms 221, the two clamp arms 1 can be moved in the direction away from each other, thereby prompting the two clamp arms 1 to open in parallel and symmetrically, and then driving the two clamp arms 231 of the atrial appendage clamp 23 to open in parallel and symmetrically. After the opened atrial appendage clamp 23 is placed at the root of the left atrial appendage, the atrial appendage clamp 23 is closed, the binding wire is pulled out, the two clamp arms 231 of the atrial appendage clamp 23 are separated from the two clamp arms 1, the atrial appendage clamp 23 remains in the body, and the split transport actuator is withdrawn.

[0142] After the atrial appendage clamp 23 is released, the two clamp arms 1 are in a parallel free opening and closing state. During the process of withdrawing the split transport actuator from the patient's body, the push rod 32 is pulled in the opposite direction. The pulling force exerted on the push rod 32 directly acts on the closed ends 20 of the two driving arms 31 through the two arm bodies 221, causing the closed ends 20 to move in a direction away from the distal end 24 of the swing arm 22, thereby adjusting the angle between the two driving arms 31, so that the two driving arms 31 are gradually folded symmetrically and stored in the first accommodating space 4 and the second accommodating space 6. The two driving arms 31 are gradually folded symmetrically, causing the two arm bodies 221 to move away from the distal end 24 of the swing arm 22. The proximal end 25 of 221 slides in the direction away from the distal end 24 of the two arm bodies 221, so that the distance between the proximal end 25 of the two arm bodies 221 and the distal end 24 of the two arm bodies 221 becomes longer, thereby adjusting the angle between the two arm bodies 221, and then realizing the gradual symmetrical folding of the two arm bodies 221, and storing them in the first accommodating space 4 and the second accommodating space 6. The two arm bodies 221 are gradually symmetrically folded, so that the two forceps arms 1 move in the direction of approaching each other, thereby prompting the two forceps arms 1 to close in parallel and symmetrically, which is convenient for withdrawing the card from the patient's body through the transport punch.

[0143] The first structure or the second structure mentioned above can refer to the first embodiment, and a limit rod 19 is provided on the boss 17 to limit the maximum opening and closing angle of the two arms 221 through the limit rod 19.

[0144] Embodiment three:

[0145] The third embodiment provides a conveying device, including an operating handle and the split-type conveying actuator in the above embodiment;

[0146] The split delivery actuator is used to connect to the object to be implanted;

[0147] The operating handle includes a connecting rod 26 and a control mechanism (not shown), and the connecting rod 26 is connected to the proximal end of the pivot seat 21;

[0148] The control mechanism passes through the lumen 261 of the connecting rod 26 (the lumen 261 is Fig.14 As shown in the figure, the control mechanism is operably connected to the swing arm 22 through the driving mechanism to operate the split-type conveying actuator, that is, the control mechanism provides a power source for the driving mechanism 3, and the control mechanism can make the swing arm 22 symmetrically unfold or fold around the center of the pivot seat 21 through the driving mechanism 3, so as to cause the two clamp arms 1 to open or close in parallel and symmetrically.

[0149] It should be pointed out that the present disclosure only relates to the structure of the split-type conveying actuator, which can be used in conjunction with the control mechanism of the prior art. Therefore, in the following description, only the specific structure of the split-type conveying actuator will be described, and the structure of other parts of the operating handle can refer to the corresponding parts in the prior art.

[0150] Specifically in the first embodiment of the present application, the control mechanism (not shown) is operably connected to the two arm bodies 221 of the swing arm 22 through the control line (not shown) of the driving mechanism 3 and the two driving arms 31, driving the swing arm 22 to unfold or fold symmetrically around the center of the pivot seat 21, thereby causing the two clamp arms 1 to open or close in parallel and symmetrically.

[0151] Specifically in the second embodiment of the present application, the control mechanism (not shown) is operably connected to the two arm bodies 221 of the swing arm 22 through the push rod 32 and the two driving arms 31 of the driving mechanism 3, driving the swing arm 22 to unfold or fold symmetrically around the center of the pivot seat 21, thereby causing the two clamp arms 1 to open or close in parallel and symmetrically.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A split conveying actuator, characterized in that: It includes a clamp arm and a split parallel opening and closing mechanism; There are two clamp arms, and the two clamp arms are pivotally connected to the split parallel opening and closing mechanism; The parallel opening and closing mechanism comprises a pivot seat and a swing arm; The pivot seat is arranged between the two clamp arms; The swing arm is pivotally connected to the pivot seat, and the swing arm can be symmetrically unfolded or folded around the center of the pivot seat; The distal end of the swing arm is pivotally connected to the corresponding clamp arm, and the proximal end of the swing arm is slidably connected to the corresponding clamp arm, so that the swing arm can be symmetrically unfolded or folded around the center of the pivot seat, which can cause the two clamp arms to open or close in parallel and symmetrically.

2. The split conveying actuator according to claim 1, characterized in that: It also includes a driving mechanism, which is pivotally connected to the distal end or the proximal end of the swing arm.

3. The split conveying actuator according to claim 2, characterized in that: The swing arm comprises two arm bodies, the two arm bodies are arranged in an X shape, and the two arm bodies are pivotally connected to the pivot seat.

4. The split conveying actuator according to claim 3, characterized in that: A first accommodating space is provided in the pivot seat; The swing arm is disposed in the first accommodation space and is pivotally connected to the pivot seat; The surfaces of the two clamp arms facing the pivot seat are respectively provided with second accommodating spaces; The distal end of the swing arm is arranged in the second accommodating space of the corresponding clamp arm and is pivotally connected to the clamp arm. The proximal end of the swing arm is arranged in the second accommodating space of the corresponding clamp arm and is slidably connected to the clamp arm.

5. The split-type conveying actuator according to claim 4, characterized in that: Each of the pliers arms includes a pliers head, a transition seat and a connecting seat connected in sequence. The transition seat is protruding in the direction toward the pivot seat to form a protrusion. The height difference between the protrusion and the connecting seat is used to accommodate the corresponding side of the pivot seat. The second accommodating space is arranged in the connecting seat.

6. The split-type conveying actuator according to claim 5, characterized in that: A sliding groove communicating with the second accommodation space is provided on the side wall of the connecting seat; The proximal end of the swing arm is slidably connected to the sliding groove on the corresponding clamp arm.

7. The split-type conveying actuator according to claim 5, characterized in that: It also includes a support plate for an implant to be implanted, the support plate for an implant to be implanted is respectively mounted on the surfaces of the two clamp heads facing the pivot seat, and a positioning groove is provided between the protruding portion and the support plate for an implant to be implanted; The notches of the positioning grooves of the two clamp heads are arranged opposite to each other to form a receiving groove for receiving the proximal end of the implant to be implanted; An arc transition is adopted between the support plate for the object to be implanted and the clamp head.

8. The split-type conveying actuator according to claim 7, characterized in that: A threading hole is provided on the surface of each of the pliers heads facing away from the pivot seat, and the threading holes include a first threading hole and a second threading hole. The first threading hole passes through the pliers heads and passes out from the pliers heads toward the surface of the pivot seat, and the second threading hole passes through the pliers heads and the support plate to be implanted in sequence, and passes out from the support plate to be implanted toward the side wall of the first threading hole.

9. The split-type conveying actuator according to claim 8, characterized in that: A wire guide groove is arranged on the surface of each clamp head away from the pivot seat, and the wire guide groove is connected with the first wire threading hole and the second wire threading hole.

10. The split-type conveying actuator according to claim 4, characterized in that: The driving mechanism comprises a control line and two driving arms, the two driving arms are arranged in the first accommodation space of the pivot seat, the proximal ends of the two driving arms are pivotally connected to the distal ends of the two arm bodies, the distal ends of the two driving arms overlap and are pivotally connected to form a closed end, and the closed end is slidably connected to the pivot seat; The control line is connected to the closed end.

11. The split-type conveying actuator according to claim 10, characterized in that: A boss is provided on the inner wall of the first accommodation space of the pivot seat, and the two arms are pivotally connected to the boss, and there is a certain distance between the boss and the distal end of the pivot seat, so that a slide groove can be provided on the inner wall of the first accommodation space of the pivot seat, and the slide groove is horizontally collinear with the boss but not connected; The closed end is slidably connected to the slide groove.

12. The split-type conveying actuator according to claim 4, characterized in that: The driving mechanism comprises a push rod and two driving arms, the two driving arms are arranged in the first accommodation space of the pivot seat, the distal ends of the two driving arms are pivotally connected to the proximal ends of the two arm bodies, the proximal ends of the two driving arms overlap and are pivotally connected to form a closed end, and the closed end passes through the proximal end of the pivot seat; The push rod is connected to the closed end.

13. The split-type conveying actuator according to claim 12, characterized in that: A boss is provided on the inner wall of the first accommodation space of the pivot seat, and the two arms are pivotally connected to the boss; The boss is provided with a slide groove; The closed end is slidably connected to the slide groove.

14. The split-type conveying actuator according to claim 12, characterized in that: A boss is provided on the inner wall of the first accommodating space of the pivot seat, and the two arms are pivotally connected to the boss; A central limiting block is arranged in the lumen of the connecting rod of the operating handle connected to the pivot seat, and the push rod is arranged in the lumen and passes through the central limiting block to be connected to the closed end.

15. The split conveying actuator according to claim 10 or 12, characterized in that , the relative surfaces of the two driving arms are respectively provided with clearance grooves, and the relative surfaces of the two arm bodies are respectively provided with clearance grooves.

16. The split conveying actuator according to claim 11, 13 or 14, characterized in that: A limiting rod is arranged on the boss.

17. The split conveying actuator according to claim 11, 13 or 14, characterized in that: A through hole or a through slot is disposed at the proximal end of the pivot seat, and the through hole or the through slot is communicated with the first accommodating space.

18. The split-type conveying actuator according to claim 1, characterized in that: The surfaces of the two clamp arms facing away from each other are arc-shaped surfaces.

19. A conveying device, characterized in that: A split-type conveying actuator comprising an operating handle and any one of claims 1 to 18; The split delivery actuator is used to connect to an object to be implanted; The operating handle includes a connecting rod and a control mechanism, wherein the connecting rod is connected to the proximal end of the pivot seat; The control mechanism passes through the lumen of the connecting rod, and the control mechanism is operably connected to the swing arm through a driving mechanism to operate the split-type conveying actuator.

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