Mechanical continuous myocardial tissue resection system

Abstract

A mechanical continuous myocardial tissue resection system, comprising: a housing, a resection cavity component, a pull lever component, an axial rotary resection knife component, a tissue locking component, a locking triggering component and an excitation component. The tissue locking component in the system is movably inserted into the resection cavity component and can lock a resection target tissue entering the internal cavity of the resection cavity component from a resection window. The locking triggering component is configured to be capable of locking the tissue locking component and can be triggered to release the locked tissue locking component. The pull lever component is configured to be capable of driving the tissue locking component and locking same with the locking triggering component. The excitation component is configured to be in linkage with the axial rotary resection knife component and the locking triggering component. The system can realize one-time puncture and continuous rotary resection in the state of a minimally invasive incision, thereby achieving precise resection of myocardial tissue.

Description

A mechanical continuous myocardial tissue resection system Technical Field

[0001] The present invention relates to medical instruments, in particular to instruments for myocardial tissue resection. Background Art

[0002] Hypertrophic obstructive cardiomyopathy is a hereditary heart disease characterized by a significant thickening of the ventricular septum. Most patients shy away from open-chest cardiopulmonary bypass surgery and opt for conservative medications. However, medications only temporarily alleviate symptoms and fail to fundamentally resolve the obstruction. Traditional open-chest surgery is associated with significant trauma, limited surgical field of view, high risks, and slow recovery.

[0003] Currently, commonly used surgical procedures for patients with hypertrophic obstructive cardiomyopathy include: classic ventricular septal hypertrophy myocardectomy (Morrow procedure), modified and expanded Morrow procedure, transmitral valve orifice left ventricular mid-cavity obstruction dredging (mitral valve treatment is required for patients with mitral valve disease), transapical myocardectomy (suitable for patients with apical hypertrophy as the main symptom or combined with apical hypertrophy leading to left ventricular cavity shrinkage and diastolic dysfunction), and transright ventricular myocardectomy (combined with right ventricular wall hypertrophy).

[0004] Classic myectomy for ventricular septal hypertrophy (Morrow procedure) or modified and expanded Morrow procedure are both performed using conventional surgical instruments, without dedicated surgical instruments. These classic surgeries present the following challenges during their actual implementation:

[0005] 1. Ventricular arrest, extracorporeal circulation system assistance; complicated and demanding preoperative requirements;

[0006] 2. Opening the chest through a large incision and opening the heart to remove the hypertrophic myocardium of the ventricular septum; this method causes great harm to the patient and is only suitable for a limited number of patients;

[0007] 3. The amount of myocardial resection is difficult to control, and there is a risk of not achieving the desired treatment or excessive resection leading to complications, thus affecting the beneficiary group.

[0008] 4. After the operation, there is a risk of necrosis and inability to restart the heart due to prolonged cardiac arrest;

[0009] 5. Due to the heart being cut open, the recovery time is long and the risk of complications is high;

[0010] 6. Two-handed operation results in inaccurate positioning and displacement differences.

[0011] Chinese patent application publication number CN111938760A discloses a manually actuated tissue resection instrument, which specifically includes a housing, an outer shaft extending distally from the housing and defining a window at its distal end portion, an inner cutting shaft extending through the outer shaft, a drive assembly, a trigger, and an adjustable resistance mechanism. The inner cutting shaft can translate and / or rotate relative to the outer shaft. The drive assembly is coupled to the inner cutting shaft and is configured to drive its translation and / or rotation. Manual actuation of the trigger actuates the drive assembly to drive the translation and / or rotation of the inner cutting shaft. The adjustable resistance mechanism includes a spring coupled between the trigger and the housing, and a control knob operably coupled to the spring to be able to adjust the resistance of the trigger pivoting from an unactuated position to an actuated position.

[0012] Such a manually actuated tissue resection instrument cannot stably and effectively lock the tissue to be resected, which can easily lead to inaccurate excision results and the problem of the resected tissue remaining in the body. Furthermore, the manually actuated tissue resection instrument uses suction to discharge the resected tissue. This suction method will also simultaneously suck away a large amount of blood when sucking the resected tissue, and is not suitable for myocardial tissue resection surgery at all.

[0013] Summary of the Invention

[0014] In response to the problems existing in existing myocardial tissue resection instruments, the purpose of the present invention is to provide a mechanical continuous myocardial tissue resection system that can achieve one-time puncture and continuous rotary resection under minimally invasive incision conditions, thereby accurately resecting myocardial tissue.

[0015] In order to achieve the above-mentioned object, the present invention provides a mechanical continuous myocardial tissue resection system, comprising: a housing, a resection chamber assembly, a bolt pulling assembly, an axially rotating resection blade assembly, a tissue locking assembly, a locking trigger assembly, and an excitation assembly;

[0016] The resection cavity assembly is extended outward from the shell, and its internal cavity is communicated with the inner cavity of the shell. A resection window is formed on the side of the distal end of the resection cavity assembly and is communicated with the internal cavity.

[0017] The axially rotating resection blade assembly can be axially rotatably inserted into the cavity of the resection cavity assembly, and the cutting portion at the front end thereof can form a continuous resection action relative to the resection window on the resection cavity assembly based on the axial rotation;

[0018] The tissue locking assembly is movably inserted into the axially rotating resection blade assembly and is configured to be able to move back and forth between a first position and a second position. In the first position, the tissue locking assembly can lock the target resection tissue entering the axially rotating resection blade assembly from the resection window. In the second position, the tissue locking assembly can generate a first driving force toward the first position.

[0019] The locking trigger assembly is disposed in the housing and is configured to lock the tissue locking assembly moved to the second position and to be triggered to release the locked tissue locking assembly;

[0020] The bolt pulling assembly is movably disposed on the housing and is configured to drive the tissue locking assembly to move from a first position to a second position and lock with the locking trigger assembly;

[0021] The excitation component is movably arranged in the shell and is configured to be linked with the axially rotating resection knife component and the locking trigger component, synchronously triggering the locking trigger component during the movement, releasing the locked tissue locking component, and synchronously driving the axially rotating resection knife component to perform continuous axial rotation.

[0022] In some examples of the present invention, the resection system further includes a negative pressure component, which is arranged in conjunction with the resection cavity component to form a negative pressure state in the internal cavity of the resection cavity component and form a negative pressure adsorption force on the resection window.

[0023] In some examples of the present invention, the negative pressure component is further provided in cooperation with the axially rotating resection blade component, and is capable of forming a negative pressure state inside the axially rotating resection blade component.

[0024] In some examples of the present invention, the resection system also includes a tissue compression assembly, which is configured to cooperate with the axially rotating resection knife assembly, and can be linked with the bolt assembly, and can be moved relative to the axially rotating resection knife assembly under the drive of the bolt assembly, and can synchronously compress the tissue resected by the axially rotating resection knife assembly during the movement.

[0025] In some embodiments of the present invention, the tissue compression assembly includes a tissue compression member body and a second elastic member. The front portion of the tissue compression member body can be movably inserted into the axially rotating resection blade assembly, and the rear portion is configured to be linked with the bolt pull assembly and can be driven from the third position to the fourth position under the linkage drive of the bolt pull assembly.

[0026] The second elastic component is arranged in cooperation with the tissue compression member body, and is configured to limit the movement of the tissue compression member body to the third position in the initial state, and when the tissue compression member body is driven to the fourth position by the pull bolt assembly, it generates deformation to form an elastic restoring force on the tissue compression member body facing the third position.

[0027] In some examples of the present invention, an outer surface of the resection cavity body in the resection cavity assembly is formed with ultrasound imaging enhancement features.

[0028] In some examples of the present invention, the axially rotating resection knife assembly includes a resection knife having a resection knife groove formed thereon, and the resection knife groove is configured to cooperate with the resection window in the resection cavity assembly to perform resection on the target tissue to be resected that enters the resection knife groove through the resection window.

[0029] In some examples of the present invention, the tissue locking assembly includes a tissue locking body and a fourth elastic component, the tissue locking body includes a puncture needle, the front section of the puncture needle can be movably inserted in the axially rotating resection knife assembly, and the rear section is provided with a limiting portion and a hook portion, the limiting portion is configured to cooperate with the bolt pulling assembly, and the hook portion is configured to be locked and cooperated with the locking trigger assembly; the tissue locking body cooperates with the bolt pulling assembly through the limiting portion, and can be driven from the first position to the second position by the bolt pulling assembly, and is locked and cooperated with the locking trigger assembly through the hook portion in the second position; the fourth elastic component is arranged in cooperation with the tissue locking body, and is configured to limit the movement of the tissue locking body to the first position in the initial state, and when the tissue locking body is driven to the second position, it generates deformation to form an elastic restoring force facing the first position on the tissue locking body.

[0030] In some examples of the present invention, the locking trigger assembly includes a locking trigger body and a third elastic component. The locking trigger body is rotatably disposed in the housing and is configured to rotate between a first state and a second state under the linkage drive of the excitation assembly. When the locking trigger body rotates to the first state, it can form a locking structure with the tissue locking assembly. When it rotates to the second state, it forms an unlocking structure relative to the tissue locking assembly.

[0031] The third elastic component is arranged in cooperation with the locking trigger body, and is configured to limit the locking trigger body from rotating to the first state in the initial state, and when the locking trigger body is driven to the second state, it generates deformation to form an elastic restoring force on the locking trigger body facing the first state.

[0032] In some examples of the present invention, the excitation assembly includes an excitation member body, a transmission member and the first elastic member;

[0033] The trigger body is configured to be able to move in the housing under the drive of an external actuating force, and to synchronously and continuously drive the axial rotation resection knife assembly to axially rotate during the movement, and to synchronously trigger the locking trigger assembly to a release state;

[0034] The first elastic component is arranged in cooperation with the excitation member body, and is configured to limit the movement of the excitation member body to the initial position in the initial state, and when the excitation member body moves based on the external actuating force, deformation is generated to form an elastic restoring force on the excitation member body facing the initial position.

[0035] The mechanical continuous myocardial tissue resection system provided by the present invention adopts an innovative tissue locking scheme to lock the target tissue to be resected, preventing the resected tissue from generating artificial thrombosis and its complications; on this basis, it cooperates with axial automatic rotation to resect myocardial tissue, ensuring the integrity of the target resected tissue and the smoothness of the incision, avoiding complications caused by wrinkles in the incision.

[0036] On this basis, the continuous resection system provided by the present invention can further use vacuum negative pressure to absorb tissue into the rotary cutting cavity, and cooperate with the tissue locking scheme to further prevent the resected tissue from generating artificial thrombosis and its complications.

[0037] The various functional components in the continuous resection system provided by the present invention are organically interconnected and have an automatic reset function. The innovative introduction of tissue compression and automatic reset schemes further achieves a single puncture, while continuously compressing and storing the target tissue for resection in the body, realizing continuous myocardial resection until the therapeutic effect is achieved, further increasing surgical efficiency, reducing bleeding risks, and increasing the success rate of surgery.

[0038] In the continuous resection system solution provided by the present invention, the side opening of the rotary incision is oriented in a manner that is conducive to resecting the hypertrophic myocardium of the ventricular septum below the aortic valve and the myocardium in the apical direction.

[0039] In the continuous resection system solution provided by the present invention, the outer surface of the resection cavity body is designed with ultrasonic imaging enhancement features, and ultrasonic imaging is enhanced.

[0040] In practical applications, the continuous myocardial resection system provided by this invention allows for minimally invasive incisions (4 cm) and completes treatment in a single puncture, reducing cardiac injury and intraoperative bleeding. While the heart continues to beat, precise control of myocardial resection volume is achieved, flexible resection plans are available, and the treatment effect is achieved in a single procedure.

[0041] The continuous resection system provided by the present invention can be operated with one hand during practical application, and the one-hand operation has high stability, will not shift, and can be accurately positioned, thus avoiding complications caused by displacement differences caused by two-hand operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0043] FIG1 is an example diagram of the overall structure of a mechanical continuous myocardial tissue resection system according to an embodiment of the present invention;

[0044] FIG2 is a structural diagram illustrating a resection cavity assembly according to an embodiment of the present invention;

[0045] FIG3 is a diagram of the functional components of the axially rotating resection blade assembly in an embodiment of the present invention;

[0046] FIG4 is a structural diagram of a resection knife in an embodiment of the present invention;

[0047] FIG5 is a diagram showing the functional components of a negative pressure assembly in an embodiment of the present invention;

[0048] FIG6 is a diagram showing the functional components of a sealing assembly in an embodiment of the present invention;

[0049] FIG7 is a diagram of the functional components of the tissue locking assembly in an example of the present invention;

[0050] FIG8 is a diagram showing the functional components of the pull bolt assembly in an embodiment of the present invention;

[0051] FIG9 is a diagram of the functional components of a tissue compression assembly according to an embodiment of the present invention;

[0052] FIG10 is a diagram of the functional components of the locking trigger assembly in an example of the present invention;

[0053] FIG11 is a diagram of the functional components of the excitation assembly in an example of the present invention;

[0054] FIG12 is a cross-sectional view of a front-end component of a mechanical continuous myocardial tissue resection system according to an embodiment of the present invention.

[0055] Implementation Method

[0056] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0057] Referring to FIG1 , there is shown an example of a mechanical continuous myocardial tissue resection system according to the present invention.

[0058] With reference to the diagram, the mechanical continuous myocardial tissue resection system given in this example is mainly composed of a shell 11, an excitation component 1, a tissue compression component 2, a locking trigger component 3, a tissue locking component 4, a bolt pulling component 5, a negative pressure component 6, an axially rotating resection knife component 8 and a resection chamber component 9, which are organically coordinated with each other.

[0059] The housing 11 is used to constitute the main structure of the system solution to carry other components to form a compact, stable and reliable whole.

[0060] In this embodiment, the specific structure of the housing 11 is not limited and can be determined according to actual needs.

[0061] The resection cavity assembly 9 in the present system is arranged at the front end portion of the housing 11 and is distributed and extended outward from the housing 11 as a whole to form a front end insertion portion of the entire system for performing the resection operation.

[0062] The interior of the resection chamber component 9 is hollow, and the internal cavity is connected to the inner cavity 11-1 of the shell 11. At the same time, a resection window 9-1 connected to the internal cavity is formed on the side of the distal end of the resection chamber component 9. The resection window 9-1 forms a channel from the outside to the internal cavity of the resection chamber component 9, and the area of ​​the internal cavity of the resection chamber component 9 corresponding to the resection window 9-1 constitutes a rotary cutting cavity area 9-2, which is used for rotary cutting operations; in this way, the target tissue to be resected can enter the rotary cutting cavity area 9-2 inside the resection chamber component 9 through the resection window 9-1, so as to implement precise resection operations.

[0063] The main body of the axially rotating resection blade assembly 8 in this system is inserted into the cavity of the resection cavity assembly 9. Its front end mates with the resection window 9-1 on the resection cavity assembly, and its rear end extends into the housing 11 for engagement with the excitation assembly 1. The axially rotating resection blade assembly 8 is configured to rotate axially relative to the resection cavity assembly 9, and the cutting portion at the front end performs a continuous resection motion relative to the resection window on the resection cavity assembly based on the axial rotation, thereby resecting the target tissue within the interior of the resection cavity assembly 9 that has entered through the resection window 9-1.

[0064] The negative pressure component 6 in this system is connected to the negative pressure source system 10 and is arranged in conjunction with the resection chamber component 9 to form a negative pressure state in the internal cavity of the resection chamber component 9, so as to form a negative pressure adsorption force in the resection window, thereby sucking the target tissue to be resected from the resection window 9-1 into the internal cavity of the resection chamber component 9 (i.e., the rotary cutting cavity), so as to cooperate with the rotary cutting of the axial rotating resection knife component 8 and effectively prevent the resected tissue from producing artificial thrombosis and its complications.

[0065] At the same time, the negative pressure component 6 is also arranged in cooperation with the axial rotating resection knife component 8 in the resection chamber component 9, and can form a negative pressure state inside the axial rotating resection knife component 8. Cooperating with the negative pressure state in the resection chamber component 9, it can form a double negative pressure effect in the resection chamber area 9-2 corresponding to the resection window 9-1 inside the resection chamber component 9, so that it can more stably adsorb the diseased area, that is, more stably adsorb the tissue to be resected, so as to ensure the stability and accuracy of subsequent tissue resection.

[0066] The main body of the tissue locking assembly 4 in this system is movably inserted into the cavity of the resection cavity assembly 9. Its front end, acting as a locking portion, can extend into the rotary cutting cavity region 9-2 of the resection cavity assembly 9. Its rear end, acting as the actuator, is located within the inner cavity 11-1 of the housing 11, thereby cooperating with the trigger assembly 3, the bolt assembly 5, and other components to achieve a seamless linkage. The tissue locking assembly 4 is configured such that its rear end cooperates with the bolt assembly 5, enabling it to move from a first position to a second position within the inner cavity 11-1 of the housing 11, driven by the bolt assembly 5. When the rear end of the tissue locking component 4 moves to the first position, the front end of the tissue locking component 4 just extends into the rotary cutting cavity area 9-2 of the resection cavity component 9, and can lock the target resection tissue sucked into the internal cavity of the resection cavity component 9 from the resection window; when the rear end of the tissue locking component 4 moves to the second position, the rear end can be locked with the locking trigger component 3, and can generate a first driving force facing the first position, while driving the front end of the tissue locking component 4 away from the rotary cutting cavity area 9-2 corresponding to the resection window 9-1 in the resection cavity component 9.

[0067] The first driving force can drive the rear end of the tissue locking component 4 to automatically move from the second position to the first position at a certain speed when the rear end of the tissue locking component 4 contacts and locks with the locking trigger component 3, thereby driving the front end of the tissue locking component 4 to move toward the resection window 9-1 of the resection cavity component 9, so as to form a physical lock on the target resection tissue sucked into the internal cavity of the resection cavity component from the resection window.

[0068] The tissue locking component 4 configured in this way can be combined with the negative pressure component 6 to achieve double locking of the target tissue to be resected within the rotary cutting cavity area 9-2 of the resection cavity component 9, so as to perform precise resection and avoid the generation of artificial thrombus, tissue debris, and the complications caused by them.

[0069] The locking trigger assembly 3 in this system is movably positioned within the housing, corresponding to the tissue locking assembly 4 and the excitation assembly 1. This locking trigger assembly 3 is configured to lock the rear end of the tissue locking assembly 4 when it has moved to the second position, locking and retaining the rear end of the tissue locking assembly 4 in the second position. Furthermore, this locking trigger assembly 3 is configured to be linked to the excitation assembly 1, and can be mechanically triggered by the excitation assembly 1 to release the locked tissue locking assembly 4. This locking trigger assembly 3 effectively implements the mechanical linkage between the tissue locking assembly 4 and the excitation assembly 1.

[0070] The bolt assembly 5 of this system is movably mounted on the housing 11. It is configured to be linked to the tissue compression assembly 2 and to drive the tissue locking assembly 4 from a first position to a second position, where it is locked with the locking trigger assembly 3. Under the action of an external actuating force, the bolt assembly 5 moves relative to the housing 11. During this movement, it synchronously drives the linked tissue compression assembly 2. After a certain movement distance or synchronous linkage, it drives the tissue locking assembly 4, synchronously driving the tissue locking assembly 4 from the first position to the second position, where it is locked with the locking trigger assembly 3.

[0071] The main body of the tissue compression assembly 2 in the present system is movably inserted into the cavity of the resection cavity assembly 9. The front section of the tissue compression assembly 2 inserted into the cavity of the resection cavity assembly 9 is configured to correspond to the axially rotating resection blade assembly 8, while the rear section is distributed in the inner cavity 11-1 of the shell 11 and is configured to be able to work in conjunction with the bolt assembly 5. The tissue compression assembly 2 thus configured can be movable relative to the axially rotating resection blade assembly 8 under the linkage drive of the bolt assembly 5, and can synchronously compress the tissue resected by the axially rotating resection blade assembly 5 during the movement. Through the compression operation, the target tissue to be resected is removed from the rotary resection cavity area 9-2 corresponding to the resection window 9-1 in the internal cavity of the resection cavity assembly 9 for storage, freeing the rotary resection cavity area 9-2 corresponding to the resection window 9-1 in the resection cavity assembly 9 for subsequent resection, thereby achieving continuous resection.

[0072] The present system does not impose any limitation on the specific implementation method of the tissue compression component 2 for performing the compression operation on the excised tissue, and it can be determined according to actual needs.

[0073] The excitation component 1 in this system serves as the operating actuating component of the entire system. It is movably placed in the shell 11 and is configured to be linked with the axially rotating resection knife component 8 and the locking trigger component 3. It can synchronously trigger the locking trigger component 3 during the movement, release the locked tissue locking component 4, and synchronously drive the axially rotating resection knife component 8 to perform continuous axial rotation in the cavity of the resection cavity component 9.

[0074] The mechanical continuous myocardial tissue resection system given in this example is such that, in the initial state, the bolt pulling assembly 5 is in the initial position and is linked to the tissue compression assembly 2; the excitation assembly 1 is in the initial position and is linked to the axially rotating resection knife assembly 8 and the locking trigger assembly 3; and the tissue locking assembly 4 is in the first position.

[0075] First, the operation preparation is carried out, and a certain actuating force (such as manual force with one hand) is applied to the bolt pulling assembly 5. The bolt pulling assembly 5 moves along the shell 11. During the movement, the tissue compression assembly 2 linked with it is synchronously driven, and the tissue compression assembly 2 is driven to compress the rotary cutting cavity area 9-2 in the resection cavity assembly 9; and after moving a certain stroke, the tissue locking assembly 4 is driven, and the tissue locking assembly 4 is synchronously driven to move from the first position to the second position, so that the tissue locking assembly 4 is locked with the locking trigger assembly 3 in the second position. At this time, the front end of the tissue locking assembly 4 is away from the rotary cutting cavity area 9-2 in the resection cavity assembly 9.

[0076] On this basis, the mechanical continuous myocardial tissue resection system is operated so that the resection chamber assembly 9 is extended into the patient site through a minimally invasive incision, and the resection window 9-1 on the side opening of the resection chamber assembly 9 faces the target tissue to be resected (such as myocardial hypertrophy of the ventricular septum below the aortic valve, myocardium toward the apex, etc.). After the resection window 9-1 is aligned with the target tissue to be resected, a negative pressure state is created within the resection chamber assembly 9 by the negative pressure assembly 6, sucking the target tissue to be resected through the resection window into the rotary cutting cavity within the resection chamber assembly 9, forming a preliminary lock.

[0077] Then, the excision operation is performed by directly applying a certain operating actuation force (such as manual force with one hand) to the excitation component 1, and the excitation component 1 moves, synchronously triggering the locking trigger component 3, releasing the locked tissue locking component 4, and the released tissue locking component 4 automatically moves at a certain speed toward the rotary cutting cavity inside the excision cavity component 9 under the action of the first driving force. At that time, the front end of the tissue locking component 4 extends into the rotary cutting cavity inside the excision cavity component 9, forming a secondary physical lock for the target tissue to be excised that is sucked into the rotary cutting cavity. At the same time, the excitation component 1 also synchronously drives the axially rotating cutting knife component 8 to perform continuous axial rotation in the cavity of the excision cavity component 9, and synchronously excises the target tissue locked in the rotary cutting cavity inside the excision cavity component 9.

[0078] The mechanical continuous myocardial tissue resection system given in this example realizes the continuous automatic rotary cutting function by organic linkage between purely mechanical structures. Only a simple single mechanical operation is required to realize the locking of the target tissue to be resected, continuous automatic rotary cutting, and compression storage of the resected tissue. The operation is convenient, stable and reliable.

[0079] Regarding the mechanical continuous myocardial tissue resection system given in this example, the following will illustrate its implementation process and corresponding technical features through a specific implementation plan.

[0080] Regarding the structure of the shell 11 in the resection system, taking into account the special requirements of the resection system as a medical device for operational portability, a gun-shaped structure is preferred, which is mainly composed of a barrel part 11-2 and a grip part 11-3 connected to the barrel part. Corresponding cavities 11-1 are formed inside the barrel part and the grip part as placement cavities for placing other components.

[0081] The housing 11 thus formed conforms to ergonomics and is convenient for the user to operate with one hand.

[0082] However, it should be noted that the structure of the housing 11 is not limited thereto, and any other feasible structure may be adopted as needed.

[0083] Referring to Figures 1 and 2, an example of the structure of the resection chamber assembly 9 in the present resection system is shown. Based on the diagram, the present resection chamber assembly 9 includes a circular tubular body 9-3, which constitutes the resection chamber body of the resection chamber assembly 9, one end of which defines a seal and the other end defines an opening. At the same time, the circular tubular body 9-3 is provided with a corresponding incision on the side wall of the end defining the seal, and the incision is connected to the inner cavity of the circular tubular body 9-3, thereby forming a corresponding resection window 9-1. The resection window 9-1 can cooperate with the inner cavity of the circular tubular body 9-3, and a rotary cutting chamber area 9-2 is formed in the area of ​​the inner cavity of the circular tubular body 9-3 corresponding to the resection window 9-1. The rotary cutting chamber area 9-2 is configured to allow the target tissue to be resected to enter the rotary cutting chamber area 9-2 from the resection window 9-1, and cooperate with the axially rotating resection knife assembly 8 to perform rotary cutting on the target tissue to be resected that enters the rotary cutting chamber area 9-2.

[0084] In order to cooperate with the diseased area to the greatest extent possible, so that the target tissue (tissue that needs to be removed) in the diseased area can quickly and stably enter the rotary cutting cavity area 9-2 from the resection window 9-1, the resection window 9-1 in this example is preferably an oblong shape defined as extending axially along the circular tube body 9-3.

[0085] The size of the cutting window 9 - 1 is not limited here and can be determined according to actual needs.

[0086] As a further optimized setting, in this example, an ultrasonic imaging enhancement feature is formed on the outer surface of the resection cavity body (ie, the circular tube body 9-3) in the resection cavity assembly to achieve ultrasonic imaging enhancement.

[0087] As a further illustration, the ultrasound imaging enhancement feature can be formed by sandblasting the outer surface of the resection cavity body (i.e., the circular tube 9-3). For example, the sandblasted outer surface of the resection cavity body has a roughness range of 0.5 μm to 40 μm, corresponding to a mesh size of 280 to 3500. The ultrasound imaging enhancement feature thus formed can effectively enhance ultrasound imaging.

[0088] The resulting resection chamber assembly 9 is integrally mounted on the front end of the barrel portion of the gun-shaped housing 11 and extends outward, thereby forming a corresponding insertion front end. Due to the structural characteristics of the resection chamber assembly 9, in actual use, only a minimally invasive incision (approximately 4 cm) is required to allow the resection chamber assembly 9 to be inserted and reach the desired resection site, thus avoiding the need for a large thoracotomy incision.

[0089] Furthermore, the resection cavity assembly 9 is provided with a corresponding resection window 9-1 on the side of the resection cavity body, that is, the resection window 9-1 faces the side, which can more effectively and precisely resect the hypertrophic myocardium of the ventricular septum below the aortic valve and the myocardium in the apical direction.

[0090] To cooperate with the resection cavity assembly 9, the axially rotating resection knife assembly 8 in the resection system is mainly composed of a resection knife 8-2 and a first bevel gear 8-1, as shown in Figure 3-4.

[0091] Among them, the resection knife 8-2 in this example mainly includes a knife rod 8-3, which is a cylindrical structure with a hollow interior as a whole and is configured to be compatible with the resection cavity assembly 9. It can be inserted in the resection cavity assembly 9 and rotate axially relative to the resection cavity assembly 9.

[0092] Furthermore, the knife rod 8-3 is provided with a corresponding rotary cutting knife groove 8-4 at the front end thereof extending into the rotary cutting cavity area 9-2 in the resection cavity assembly 9, as shown in FIG4.

[0093] As shown in Figures 1, 4 and 12, the rotary cutting knife groove 8-4 is configured to cooperate with the resection window 9-1 in the resection cavity assembly 9 to form rotary cutting on the target tissue to be resected that enters the rotary cutting knife groove 8-4 through the resection window 9-1. Specifically, as the knife rod 8-3 is rotatably inserted into the resection cavity assembly 9, the outer wall of the knife rod 8-3 is exactly in contact with the inner wall of the inner cavity of the resection cavity assembly 9 to ensure the stability of the axial rotation of the knife rod 8-3 in the resection cavity assembly 9; at the same time, the front end of the knife rod 8-3 is exactly extended into the rotary cutting cavity area 9-2 in the resection cavity assembly 9, so that the rotary cutting knife groove 8-4 thereon is exactly corresponding to the resection window 9-1 on the resection cavity assembly 9; under this combined structure, as the knife rod 8-3 rotates axially in the resection cavity assembly 9, the rotary cutting knife groove 8-4 thereon is driven to rotate axially relative to the resection window 9-1 in the resection cavity assembly 9. During the rotation process, when the rotary cutting knife groove 8-4 rotates to a position facing the resection window 9-1, it opens. The cutting window 9-1 can allow the target tissue to be cut into the rotary cutting groove 8-4 through the cutting window 9-1; as the rotary cutting groove 8-4 continues to rotate, the rotary cutting groove 8-4 will turn away from the cutting window 9-1, and the target tissue to be cut entering therein will be cut in the process, and after the rotary cutting groove 8-4 is completely turned away from the cutting window 9-1, the front end side wall of the knife rod 8-3 will seal the cutting window 9-1, thereby completing the rotary cutting of the target tissue to be cut; the rotary cutting groove 8-4 here can fit the inner wall of the rotary cutting cavity area 9-2 in the cutting cavity assembly 9, so when cooperating with the cutting window 9-1 for rotary cutting, the integrity of the target tissue to be cut and the smoothness of the incision are guaranteed, avoiding complications caused by wrinkles in the incision.

[0094] As a further preferred arrangement, when the knife rod 8-3 is rotatably inserted into the resection cavity assembly 9, the position where the upper rotary cutting groove 8-4 is opposite to the resection window 9-1 serves as the initial knife position of the entire resection knife 8-2.

[0095] Furthermore, a corresponding first bevel gear 8-1 is provided at the rear end of the cutter rod 8-3.

[0096] Specifically, the first bevel gear 8-1 is coaxially arranged at the end of the rear end of the cutting knife 8-2 and is configured to cooperate with the transmission components in the excitation component 1 (such as the rack 1-2, the spur gear 1-3 and the second bevel gear 1-4).

[0097] The axially rotating cutting blade assembly 8 thus formed can cooperate with the cutting cavity assembly 9 and the excitation assembly 1 to achieve continuous rotary cutting.

[0098] Specifically, when the rack 1-2 of the excitation assembly 1 is driven in a positive linear motion, it can synchronously drive the spur gear 1-3 to rotate. Since the second lower bevel gear 1-4 and the spur gear 1-3 are fixed by a rotating shaft, the rotation of the spur gear 1-3 is converted into the rotational motion of the second lower bevel gear 1-4, thereby linking the rotational motion of the first bevel gear 8-1. Since the first bevel gear 8-1 and the resection blade 8-2 move coaxially and are fixed to each other, the resection blade 8-2 will rotate synchronously with the first bevel gear 8-1, thereby achieving automatic rotary resection.

[0099] In addition, when the rack 1-2 in the excitation component 1 performs a reset movement (such as reverse linear motion), the rack 1-2 synchronously drives the spur gear 1-3 to perform a reset movement (reverse rotation), and the spur gear 1-3 drives the second bevel gear 1-4 to perform a reset movement (reverse rotation movement), and the second bevel gear 1-4 drives the first bevel gear 8-1 to perform a reset movement (reverse rotation movement), and the first bevel gear 8-1 drives the resection knife 8-2 to perform a reset movement (reverse rotation movement) and return to the original knife position, thereby exposing the position of the resection window 9-1 of the resection cavity body 9, so that the resection window 9-1 of the resection cavity body 9 is in an open state, thereby achieving automatic reset, so as to perform the next rotary cutting operation and realize continuous rotary cutting.

[0100] In order to cooperate with the resection chamber assembly 9 and the axial rotating resection blade assembly 8, the negative pressure assembly 6 in this system adopts two negative pressure circuits to simultaneously cooperate with the resection chamber assembly 9 and the axial rotating resection blade assembly 8 to form a negative pressure environment in the resection chamber assembly 9 and the axial rotating resection blade assembly 8.

[0101] As shown in FIG5 , the negative pressure assembly 6 in the present system is Y-shaped as a whole, and specifically includes a negative pressure main circuit 6 - 3 , a first negative pressure branch circuit 6 - 1 and a second negative pressure branch circuit 6 - 2 .

[0102] The first negative pressure branch 6 - 1 is connected to the cavity inside the resection cavity assembly 9 and is used to form a negative pressure in the internal cavity of the resection cavity assembly 9 to form a negative pressure adsorption force at the resection window 9 - 1 .

[0103] As an example, in this embodiment, a plurality of air holes 6-4 are preferably opened on the cavity wall of the resection cavity assembly 9 opposite to the resection window 9-1. In coordination therewith, the first negative pressure branch 6-1 is connected to the plurality of air holes 6-4 distributed opposite to the resection window 9-1 on the resection cavity assembly 9 through corresponding tracheal seals, thereby directly forming a negative pressure environment in the rotary cutting cavity area 9-2 of the resection cavity assembly 9, thereby ensuring the stability and reliability of the negative pressure adsorption force formed at the resection window 9-1.

[0104] The distribution scheme of the plurality of air holes 6 - 4 on the resection cavity component 9 is not limited here and can be determined according to actual needs.

[0105] Among them, the second negative pressure branch 6-2 is sealed and connected to the cavity inside the axial rotating resection knife assembly 8, and is used to form negative pressure in the internal cavity of the axial rotating resection knife assembly 8, thereby cooperating with the negative pressure environment in the resection cavity assembly 9 to form a double negative pressure environment between the resection cavity assembly 9 and the axial rotating resection knife assembly 8, thereby ensuring that a negative pressure environment is always maintained at the resection window 9-1 and / or the resection knife groove 8-4 during the resection process, forming a stable adsorption on the diseased area to ensure the stability and accuracy of subsequent resection.

[0106] The main negative pressure path 6-3 of the negative pressure assembly 6 is located within the cavity 11-1 of the housing 11 and is fixed to the inner wall of the housing cavity 11-1. To prevent interference with operation, the main negative pressure path 6-3 extends from barrel to barrel within the housing cavity 11-1, then protrudes from the bottom of the barrel. With this arrangement, one end of the negative pressure assembly 6 connects to both the first negative pressure branch path 6-1 and the second negative pressure branch path 6-2, while the other end protrudes from the housing for connection to the negative pressure source assembly 10.

[0107] Furthermore, the negative pressure source component 10 here can be connected to a syringe or related equipment through a Luer connector to ensure that a stable negative pressure is continuously provided during the operation.

[0108] The negative pressure component 6 can cooperate with the resection cavity component 9 and the axial rotation resection knife component 8 at the same time, which can ensure that the resection system is in a negative pressure environment during the entire operation, and at the same time enable the resection system to stably adsorb the diseased area.

[0109] In order to ensure the stable reliability of the cooperation between the negative pressure component 6 and the resection chamber component 9 and the axial rotating resection knife component 8, that is, to ensure the stable reliability of the negative pressure state in the resection chamber component 9 and the axial rotating resection knife component 8, this system solution further introduces a sealing component 7 to further seal the resection chamber component 9 and the axial rotating resection knife component 8.

[0110] As shown in FIG6 , the sealing assembly 7 here mainly includes two parts: a first sealing assembly 7 - 1 and a second sealing assembly 7 - 2 .

[0111] Among them, the first sealing component 7-1 is arranged at the rear port of the rear end of the resection chamber body 9-3 (i.e., the circular tube body 9-3) in the resection chamber component 9, and cooperates with the axially rotating resection knife component 8 inserted in the resection chamber body 9-3 to form a dynamic seal, thereby forming a dynamic sealing structure between the resection chamber component 9 and the axially rotating resection knife component 8.

[0112] As an example, the first sealing component 7-1 here can be composed of a corresponding sealing ring, but it is not limited to this. Sealing components with other structural forms can also be used as needed, as long as a stable and reliable sealing effect can be achieved.

[0113] The second sealing component 7-2 is arranged at the rear end of the knife rod 8-3 in the axially rotating resection knife component 8 to form a sealing structure at the rear end of the knife rod 8-3. At the same time, the sealing structure formed can allow the tissue locking component 4 and the tissue compression component 2 to be movably arranged therein and maintain a sealed state; the sealing structure can also be connected to the second negative pressure branch 6-2.

[0114] As an example, the second sealing component 7-2 here can be composed of a corresponding sealing ring and a sealing seat, but it is not limited to this. Sealing components with other structural forms can also be used as needed, as long as a stable and reliable sealing effect can be achieved.

[0115] The tissue locking component 4 in this system cooperates with the negative pressure component 6 to perform secondary locking on the target tissue to be removed, which is sucked from the removal window 9-1 of the removal cavity component 9 into the removal blade groove 8-4 on the removal blade 8-2 during removal.

[0116] 7 and 12 , the tissue locking assembly 4 in the present system mainly comprises a puncture needle 4 - 3 , a fixed stopper 4 - 2 , a tail hook 4 - 1 and a fourth spring 4 - 4 .

[0117] The puncture needle 4-3 constitutes the tissue locking body of the tissue locking assembly 4 and is used to complete the tissue puncture locking operation. The front section of the puncture needle 4-3 can penetrate the second sealing assembly of the axially rotating resection blade assembly 8 and be movably inserted into the resection blade 8-2 in the axially rotating resection blade assembly 8. As the movement progresses, the front section of the puncture needle 4-3 can extend into the rotary cutter groove 8-4 at the front end of the resection blade 8-2. At the same time, the rear section is disposed in the housing 11, and the entire puncture needle 4-3 can move axially relative to the axially rotating resection blade assembly 8, so that the front section of the puncture needle 4-3 can extend back and forth into the rotary cutter groove 8-4 at the front end of the resection blade 8-2.

[0118] A fixed limiter 4-2 is provided at the rear section of the puncture needle 4-3. The fixed limiter 4-2 is configured to be eccentrically arranged relative to the puncture needle 4-3. At the same time, when the fixed limiter 4-2 is distributed in the shell 11 along with the puncture needle 4-3, it is exactly located in the movable stroke of the bolt assembly 5, thereby being able to cooperate with the bolt assembly 5. In this way, the movement of the bolt assembly 5 can drive the puncture needle 4-3 to move axially.

[0119] The specific structure of the fixed stopper 4-2 is not limited here, as long as it can achieve the above structural function. As an example, the fixed stopper 4-2 can be implemented by a fixed flange, which is convenient for connection with the puncture needle 4-3.

[0120] The rear section of the puncture needle 4-3 is further provided with a tail hook 4-1, and the tail hook 4-1 is configured to cooperate with the locking trigger assembly 3 to lock the moving state of the puncture needle 4-3.

[0121] As an example, in this example, the structural form inside the adapter shell 11 and the distribution setting scheme of the locking trigger component 3 are adapted. The tail hook 4-1 is connected to the fixed limit member 4-2 through a corresponding connecting rod, so that the tail hook 4-1 and the fixed limit member 4-2 are spaced a certain distance apart in the axial direction. In this way, the puncture needle 4-3 can have a certain moving stroke in the resection knife 8-2. Based on this moving stroke, the front end of the puncture needle 4-3 can extend into the rotary cutting groove 8-4 at the front end of the resection knife 8-2, or retract from the rotary cutting groove 8-4 at the front end of the resection knife 8-2; at the same time, based on this moving stroke, it can also form a locking fit with the locking trigger component 3.

[0122] On this basis, the coordination scheme among the puncture needle 4-3, the fixed limiter 4-2 and the tail hook 4-1 is further optimized, so that the puncture needle 4-3 can cooperate with the bolt assembly 5 through the fixed limiter 4-2 deployed in the rear section, and can be driven from the first position to the second position by the bolt assembly 5, and locked with the locking trigger assembly 3 through the tail hook 4-1 in the second position. The first position here is the initial position of the puncture needle 4-3. In this position, the front section of the puncture needle 4-3 can be inserted into the rotary cutting groove 8-4 at the front end of the resection knife 8-2 to form a puncture lock for the target tissue to be resected that is sucked into the rotary cutting groove 8-4; the second position is the moving locking trigger position of the puncture needle 4-3. In this position, the front section of the puncture needle 4-3 will be away from the rotary cutting groove 8-4 at the front end of the resection knife 8-2, giving up the rotary cutting groove 8-4 at the front end of the resection knife 8-2 so that the target tissue to be resected can enter the rotary cutting groove 8-4. At the same time, the tail hook 4-1 forms a locking fit with the locking trigger assembly 3, so that the puncture needle 4-3 remains in the second position.

[0123] Furthermore, the fourth spring 4-4 ​​is arranged in conjunction with the puncture needle 4-3, and is configured so that in the initial state, it can drive and limit the puncture needle 4-3 to move to the first position, and when the puncture needle 4-3 is driven to the second position, it generates deformation to form an elastic restoring force on the puncture needle 4-3 facing the first position.

[0124] Specifically, the fourth spring 4-4 ​​is axially arranged between the tail hook 4-1 and the inner wall of the shell 11, one end of the fourth spring 4-4 ​​is connected to the end of the tail hook 4-1, and the other end is in contact with the inner wall of the shell 11. At the same time, the length of the fourth spring 4-4 ​​corresponds to the moving stroke of the puncture needle 4-3.

[0125] In this way, in the initial state, the fourth spring 4-4 ​​drives the puncture needle 4-3 to move to the first position based on its own initial length. When the puncture needle 4-3 is driven to the second position, the fourth spring 4-4 ​​is compressed, which will form an elastic restoring force facing the first position on the puncture needle 4-3; when the locking trigger assembly 3 is triggered and the locking structure with the tail hook 4-1 is released, the fourth spring 4-4 ​​will drive the puncture needle 4-3 to move from the second position to the first position at a certain speed based on its own elastic force. At the same time, the front section of the puncture needle 4-3 will be quickly inserted into the rotary cutting groove 8-4 at the front end of the resection knife 8-2 at a certain speed to form a puncture lock on the target tissue to be resected that is sucked into the rotary cutting groove 8-4.

[0126] It should be noted here that, without departing from the basic principle of this solution, the fourth spring 4 - 4 here can also be replaced by other elastic components.

[0127] The bolt pulling assembly 5 in the present system is movably disposed on the housing 11 to drive the tissue compression assembly 2 and the tissue locking assembly 4 to move.

[0128] The specific structure of the bolt assembly 5 is not limited here, as long as it is easy to operate and has a stable structure.

[0129] As an example, as shown in Figure 8, in this example, the bolt assembly 5 is arranged on the top of the shell 11, and a corresponding movable slide 11-4 is opened on the top of the shell 11. The movable slide 11-4 is configured to extend a distance along the length direction of the shell 11, so that the bolt assembly 5 has sufficient moving stroke.

[0130] The pull bolt assembly 5 is configured to be placed in the movable slide 11 - 4 and to be able to stably move along the movable slide 11 - 4 .

[0131] The tissue compression component 2 in this system is arranged in conjunction with the bolt pulling component 5, and can form a linkage with the bolt pulling component 5, and can also drive the tissue locking component 4, so that under the drive of the bolt pulling component 5, the tissue locking component 4 can be driven to move from the first position to the second position.

[0132] As shown in FIG9 and FIG12, the tissue compression assembly 2 mainly includes a connecting rod 2-2, a connecting seat 2-3, a compression member 2-1 and a second spring 2-4.

[0133] The connecting rod 2-2 here constitutes the tissue compression body, and its front section can pass through the second sealing assembly on the axially rotating resection knife assembly 8 and be movably inserted into the resection knife 8-2 in the axially rotating resection knife assembly 8. At the same time, the rear section is distributed in the shell 11, and the connecting rod 2-2 as a whole can move axially relative to the resection cavity assembly 9.

[0134] A compression member 2-1 is provided at the front end of the connecting rod 2-2. The compression member 2-1 can cooperate with the resection knife 8-2 in the axially rotating resection knife assembly 8 when moving with the connecting rod 2-2.

[0135] Specifically, the compression member 2-1 is configured to cooperate with the inner cavity of the cutting knife 8-2 in the axially rotating cutting knife assembly 8, and is movably distributed along the connecting rod 2-2 at the cutting knife groove 8-4 in the cutting knife 8-2, and can move between the top and bottom of the cutting knife groove 8-4 on the cutting knife 8-2 when the connecting rod 2-2 moves in the cutting knife 8-2.

[0136] The compression member 2-1 configured in this way can compress the tissue remaining in the rotary cutting groove 8-4 cut by the rotary cutting groove 8-4 on the resection knife 8-2 from the incision part of the rotary cutting groove 8-4 to the bottom of the resection knife 8-2, clearing the rotary cutting groove 8-4 area of ​​the resection knife 8-2 and preparing for the next resection.

[0137] For example, the compression member 2-1 here can be composed of a corresponding disc, the size of which is adapted to the caliber of the inner cavity of the resection knife 8-2; in order to effectively drive the disc 2-1 to move in the resection knife 8-2, a compression action is formed in the area of ​​the rotary cutting groove 8-4 of the resection knife 8-2, and it does not affect the target tissue to be resected entering the rotary cutting groove 8-4, and does not affect the effective resection of the target tissue to be resected by the rotary cutting groove 8-4, the connecting rod 2-2 here is connected to the disc surface of the disc 2-1 and is offset. The center is set, and the connecting rod 2-2 is distributed along the cavity wall of the resection knife 8-2 as a whole, so that the disc 2-1 is distributed in a vertical state in the resection knife 8-2, and the connecting rod 2-2 is distributed along the cavity wall of the resection knife 8-2, which can drive the disc 2-1 to move in the resection knife 8-2 without affecting the internal space structure of the rotary cutting groove 8-4, and then without affecting the target tissue to be resected entering the rotary cutting groove 8-4, and without affecting the effective resection of the target tissue to be resected by the rotary cutting groove 8-4, as shown in Figure 12.

[0138] A connecting seat 2-3 is provided at the rear end of the connecting rod 2-2, which is used to connect the pull bolt assembly 5 to achieve linkage with the pull bolt assembly 5; at the same time, the connecting seat 2-3 is also configured as a driving part, which can form abutment with the fixed limit member 4-2 on the tissue locking assembly 4, and form an axial drive on the fixed limit member 4-2, so as to drive the puncture needle 4-3 to the second position axially during the movement.

[0139] The specific structure of the connecting seat 2-3 is not limited here and can be determined according to actual needs.

[0140] On this basis, the matching scheme between the connecting rod 2-2, the connecting seat 2-3 and the compression member 2-1 is further optimized so that the connecting rod 2-2 is located in the third position in the initial state, and can be driven from the third position to the fourth position under the linkage drive of the bolt assembly 5, thereby completing the compression operation of the resected tissue. The third position here is the initial position of the connecting rod 2-2 (i.e., the initial position of the tissue compression assembly 2). In this position, the front section of the connecting rod 2-2 can be inserted into the resection knife 8-2, and the compression member 2-1 distributed at its front end just extends into the top position of the rotary cutter groove 8-4 in the resection knife 8-2 on the axially rotating resection knife assembly 8; the fourth position is the moving compression position of the connecting rod 2-2. When moving from the third position to the fourth position, the compression member 2-1 at the front end of the connecting rod 2-2 can move from the top position of the rotary cutter groove 8-4 in the resection knife 8-2 to the top position of the rotary cutter groove 8-4. The bottom of the cutting groove 8-4, and then the tissue remaining in the rotary cutting groove 8-4 part cut by the resection knife 8-2 is simultaneously compressed from the incision area to the bottom of the rotary cutting groove 8-4 in the resection knife 8-2, clearing the rotary cutting groove 8-4 area of ​​the resection knife 8-2 and preparing for the next resection; and in the process of movement, the connecting seat 2-3 at the rear end of the connecting rod 2-2 also forms an abutment with the fixed limiter 4-2 on the tissue locking assembly 4, thereby forming an axial drive for the fixed limiter 4-2, and at the same time driving the puncture needle 4-3 to move axially from the first position to the second position during the movement.

[0141] Furthermore, the second spring 2-4 is arranged in conjunction with the connecting rod 2-2, and is configured so that in the initial state, it can drive the limiting connecting rod 2-2 to move to the third position, and when the connecting rod 2-2 is driven to the fourth position, it generates deformation to form an elastic restoring force on the connecting rod 2-2 facing the third position.

[0142] Specifically, the second spring 2-4 is axially arranged between the connecting seat 2-3 and the inner wall of the shell 11. One end of the second spring 2-4 is connected to the connecting seat 2-3, and the other end is in contact with the inner wall of the shell 11. At the same time, the length of the second spring 2-4 corresponds to the moving stroke of the connecting rod 2-2.

[0143] In this way, in the initial state, the second spring 2-4 drives the limiting connecting rod 2-2 to move to the third position based on its own initial length. When the connecting rod 2-2 is driven to the fourth position, the second spring 2-4 is compressed, which will form an elastic restoring force facing the third position on the connecting rod 2-2; when the bolt assembly 5 loses the actuating force, the second spring 2-4 will drive the connecting rod 2-2 to move from the fourth position to the third position at a certain speed based on its own elastic force. At the same time, the compression part 2-1 at the front end of the connecting rod 2-2 will automatically move from the bottom position of the rotary cutting groove 8-4 in the resection knife 8-2 to the top position of the rotary cutting groove 8-4 in the resection knife 8-2.

[0144] It should be noted here that, without departing from the basic principle of this solution, the second spring 2-4 here can also be replaced by other elastic components.

[0145] The tissue compression component 2 formed thereby can be linked with the bolt assembly 5, and driven by the bolt assembly 5 to compress and store the target tissue retained by the axially rotating resection knife assembly 8, and at the same time, during the compression and storage process, the tissue locking component 4 is synchronously abutted and driven to drive the tissue locking component 4 from the first position to the second position.

[0146] That is, the target tissue cut by the axially rotating resection knife assembly 8 will remain in the resection knife groove 8-4 of the resection knife 8-2. At that time, by applying a certain actuating force (such as manual pulling force) to the pull bolt assembly 5, the pull bolt assembly 5 will be stretched and moved backward along the shell 11, and the pull bolt assembly 5 will directly drive the tissue compression assembly 2 to move axially backward in the shell 11. After being stretched to a fixed distance L1, the compression part 2-1 on the tissue compression assembly 2 will move from the resection knife groove 8-4 of the resection knife 8-2 to the bottom position of the resection knife groove 8-4 in the resection knife 8-2, thereby compressing the target tissue retained in the resection knife groove 8-4 to the bottom of the resection knife groove 8-4 in the removal knife 8-2, clearing the resection knife groove 8-4 area in the resection knife 8-2, and preparing for the next resection; at the same time, in the process of moving the target tissue for compression and resection, the tissue compression assembly 2 will synchronously form an abutment drive on the tissue locking assembly 4 to drive the tissue locking assembly 4 from the first position to the second position.

[0147] The locking trigger component 3 in this system is movably disposed as a whole in the housing 11 and is configured to cooperate with the excitation component 1 and the tissue locking component 4 to achieve the linkage excitation of the tissue locking component 4 by the excitation component 1 .

[0148] 10 , the locking trigger assembly 3 mainly comprises two parts: a trigger link 3 - 3 and a third spring 3 - 4 .

[0149] Among them, the trigger link 3-3 is arranged in the shell 11 corresponding to the tissue locking component 4 and the excitation component 1. The trigger link 3-3 is rotatably arranged in the shell 11 through the corresponding rotating shaft, so that the trigger link 3-3 can rotate around the rotating shaft in the shell 11.

[0150] Furthermore, one end of the trigger link 3-3 is defined by a tail tongue 3-1, which is configured to extend toward the tissue locking assembly 4 and can cooperate with the tail hook 4-1 on the tissue locking assembly 4. When the tissue locking assembly 4 moves to the second position, it can abut against the tail hook 4-1 on the tissue locking assembly 4 to form a locking structure to keep the tissue locking assembly 4 in the second position; at the same time, through the rotation of the trigger link 3-3, the tail tongue 3-1 can be disengaged from the tail hook 4-1 on the tissue locking assembly 4 to form an unlocked state, at which time the tissue locking assembly 4 can freely leave the second position.

[0151] As an example, the tail tongue 3-1 is preferably limited to a right-angled triangular plate structure, with its inclined surface serving as a guide surface and the vertical surface serving as an abutment surface. The tail tongue 3-1 can first cooperate with the tail hook 4-1 on the tissue locking assembly 4 through the inclined surface, and guide the tail hook 4-1 to cross the inclined surface and abut against the vertical surface serving as the abutment surface. The vertical surface forms an abutment limit for the guided tail hook 4-1 based on the vertical distribution structure, thereby forming a locking structure.

[0152] Furthermore, the other end of the trigger link 3-3 is defined by a front tongue 3-2, which is configured to extend toward the excitation component 1 and can cooperate with the excitation component 1. When the excitation component 1 moves toward the excitation position, the trigger link 3-3 is driven to rotate under the linkage of the excitation component 1, so that the tail tongue 3-1 on the trigger link 3-3 can be separated from the tail hook 4-1 on the tissue locking component 4, forming an unlocked state.

[0153] As an example, the front tongue 3-2 is preferably defined as a gradually opening arc-shaped plate structure, and its outer arc-shaped surface serves as an abutment guide surface, which is configured to be able to abut and cooperate with the boss 1-7 on the excitation component 1. When the excitation component 1 moves toward the excitation position, the trigger link 3-3 is driven to rotate under the linkage of the boss 1-7 on the excitation component 1.

[0154] On this basis, the configuration scheme of the trigger link 3-3 is further optimized, and a corresponding rotating shaft is set at the center position of the trigger link 3-3, so that the axial distance L2 from the rotation center of the trigger link 3-3 to the front tongue 3-2 is equal to the axial distance L3 from the rotation center to the tail tongue 3-1; furthermore, the height H2 of the tail tongue 3-1 is equal to the height H1 of the boss 1-7 on the excitation component 1.

[0155] Accordingly, the trigger link 3-3 is in the first state in the initial state. In this state, the trigger link 3-3 is distributed in a horizontal state, and the tail tongue 3-1 on the trigger link 3-3 can cooperate with the tail hook 4-1 on the tissue locking component 4 to form a locking structure; when the tail hook 4-1 on the tissue locking component 4 abuts and cooperates with the guide surface of the tail tongue 3-1 on the trigger link 3-3, or when the excitation component 1 abuts and cooperates with the front tongue 3-2 on the trigger link 3-3, the trigger link 3-3 will rotate clockwise into the second state. In this state, the tail tongue 3-1 is away from the tail hook 4-1, so that the tail hook 4-1 can pass over the tail tongue 3-1 from the guide inclined surface of the tail tongue 3-1 to form locking, or the tail hook 4-1 can pass over the tail tongue 3-1 from the vertical abutment surface of the tail tongue 3-1 to achieve unlocking.

[0156] Furthermore, the third spring 3-4 is arranged in conjunction with the trigger link 3-3, and is configured to limit the trigger link 3-3 from rotating to the first state in the initial state, and when the trigger link 3-3 is driven to the second state, deformation is generated to form an elastic restoring force on the trigger link 3-3 facing the first state.

[0157] Specifically, the third spring 3-4 is vertically arranged below the tail tongue 3-1 on the trigger link 3-3, one end of the third spring 3-4 is connected to the trigger link 3-3, and the other end is connected to the inner wall of the housing 11. At the same time, the length of the third spring 3-4 corresponds to the height of the center point of the trigger link 3-3.

[0158] As shown in Figure 10, in the initial state, the third spring 3-4 drives the trigger link 3-3 to rotate and maintain it in the first state based on its own initial length; when the trigger link 3-3 is driven to rotate to the second state, the third spring 3-4 will be compressed by the trigger link 3-3, and then form an elastic restoring force facing the first state position on the end of the tail tongue 3-1 of the trigger link 3-3, as shown in Figure 10; when the trigger link 3-3 loses the driving force, the third spring 3-4 will drive the trigger link 3-3 to rotate around the central axis towards the first state position based on its own elastic force, so that the trigger link 3-3 returns to the initial state of horizontal distribution.

[0159] It should be noted that the third spring 3-4 can be replaced by other elastic components without departing from the basic principle of this solution.

[0160] When the locking trigger component 3 thus formed cooperates with the excitation component 1 and the tissue locking component 4, after the tissue locking component 4 is synchronously stretched backward by the bolt component 5 and the tissue compression component 2 is driven, the fixed limiter 4-2 on the tissue compression component 2 will link the tissue locking component 4 to synchronously move backward in a straight line (i.e., move in the direction of the tail tongue 3-1 facing the locking trigger component 3) until the tail hook 4-1 on the tissue locking component 4 passes over the tail tongue 3-1 on the locking trigger component and hooks the tail tongue 3-1.

[0161] When the excitation component 1 moves to the excitation position (i.e., the trigger 1-6 in the excitation component 1 is pushed back), the boss 1-7 thereon will push the front tongue 3-2 on the locking trigger component 3 to rotate upward, causing the trigger link 3-3 in the locking trigger component 3 to move in a clockwise direction. Since the trigger link 3-3 is symmetrical on both sides, L2=L3, and since the height H1 of the boss 1-7 is equal to the height H2 of the tail tongue 3-1, when the top of the boss 1-7 contacts the tip of the front tongue 3-2, the tail hook 4-1 on the tissue locking component 4 will be able to pass over the tail tongue 3-1 on the locking trigger component 3, thereby disengaging from the tail tongue 3-1 on the locking trigger component 3. Under the action of its own third spring 3-4, the locking trigger component 3 moves counterclockwise, and the front tongue 3-2 returns to its original position and is in contact with the boss 1-7 again, realizing the automatic reset function.

[0162] The excitation component 1 in the present system serves as the actuating component of the entire system and is movably disposed in the housing 11 to link the axially rotating resection knife component 8 and the locking trigger component 3 .

[0163] Referring to FIG11 , the excitation assembly 1 given in this example is mainly composed of a trigger 1 - 1 , a rack 1 - 2 , a spur gear 1 - 3 , a second bevel gear 1 - 4 and a first spring 1 - 6 .

[0164] The trigger 1-1 and the rack 1-2 cooperate to form the corresponding trigger body, wherein the trigger 1-1 can be movably placed in the shell 11, and the barrel part 11-2 is combined with the grip part 11-3, which is convenient for the user to operate, and can achieve a stable grasp of the shell 11 with one hand and perform the trigger operation.

[0165] Correspondingly, the rack 1-2 is movably mounted on the bottom of the barrel 11-2 and connected to the trigger 1-1, thereby realizing linkage with the trigger 1-1. In this way, when the trigger 1-1 is activated (such as by deflecting the trigger) and moves backward, the rack 1-2 will be driven to move synchronously along the bottom of the barrel 11-2.

[0166] As an example, to facilitate assembly of the trigger 1 - 1 and the rack 1 - 2 in the housing 11 , the trigger 1 - 1 and the rack 1 - 2 are preferably fixedly connected via a fixing plate 1 - 5 .

[0167] On this basis, a boss 1-7 is provided at one end of the rack 1-2 extending toward the locking trigger assembly 3, and the boss 1-7 is configured to maintain abutment with the front tongue 3-2 on the locking trigger assembly 3, so that when the rack 1-2 moves driven by the trigger 1-1, the boss 1-7 thereon is driven to move back and forth relative to the front tongue 3-2 on the locking trigger assembly 3, so as to form a linkage drive for the front tongue 3-2 on the locking trigger assembly 3, and then the linkage triggering of the locking trigger assembly 3 can be realized.

[0168] As a further optimization, the boss 1-7 is preferably configured as a hemispherical shape, with the height H1 of the boss 1-7 being equal to the height H2 of the rear tongue 3-1 of the locking trigger assembly 3. Furthermore, the maximum travel of the boss 1-7 driven by the rack 1-2 toward the front tongue 3-2 is adapted to the height H1 of the boss 1-7, to avoid the boss 1-7 being too large, causing it to pass over the front tongue 3-2 of the locking trigger assembly 3 and become stuck, preventing it from returning to its original state.

[0169] The spur gear 1-3 and the second bevel gear 1-4 here cooperate to form a transmission component in the excitation assembly, which is used to cooperate with the axially rotating resection knife assembly 8 to drive the axially rotating resection knife assembly to rotate axially.

[0170] Specifically, the spur gear 1-3 corresponds to the first bevel gear 8-1 on the axially rotating resection blade assembly 8 and is rotatably disposed within the housing 11 via a corresponding rotating shaft. The spur gear 1-3 is also configured to be distributed throughout the travel of the rack 1-2 and to maintain meshing engagement with the rack 1-2. This allows for linkage with the rack 1-2, meaning that when the rack 1-2 moves, it synchronously drives the spur gear 1-3 to rotate.

[0171] The second bevel gear 1-4 is coaxially arranged on the spur gear 1-3, and is configured to maintain engagement with the first bevel gear 8-1 on the axially rotating cutting knife assembly 8, so that when the spur gear 1-3 is driven by the rack 1-2 to rotate, it will synchronously drive the second bevel gear 1-4 to rotate, and the rotation of the second bevel gear 1-4 will synchronously link the first bevel gear 8-1 to rotate axially.

[0172] The first spring 1-6 in this excitation component 1 is set corresponding to the trigger 1-1, and is configured to limit the movement of the trigger 1-1 to the initial position in the initial state, and when the trigger 1-1 moves based on the external actuating force, it generates deformation to form an elastic restoring force on the trigger 1-1 facing the initial position.

[0173] There is no limitation on the specific arrangement of the first springs 1-6, as long as the above functions can be achieved.

[0174] It should be noted that the first springs 1-6 can be replaced by other elastic components without departing from the basic principles of this solution.

[0175] The excitation component 1 formed thereby can move in the shell 11 under the drive of an external actuating force, and synchronously and continuously drive the axial rotation resection knife component 8 to rotate axially during the movement, and can synchronously trigger the locking trigger component 3 to release the state; it can also automatically reset when the external actuating force disappears.

[0176] Specifically, the trigger 1-1 and the rack 1-2 in the excitation assembly 1 are fixed together by a fixing plate 1-5 for synchronous movement. When the trigger 1-1 is pushed back by an external actuating force (such as manual), the first spring 1-6 is synchronously compressed, and the rack 1-2 is synchronously driven to move linearly backward.

[0177] The rack 1-2 moves synchronously during the movement, driving the spur gear 1-3 to rotate. Since the second bevel gear 1-4 and the spur gear 1-3 are fixed by a rotating shaft, it is converted into the rotational movement of the second bevel gear 1-4, thereby linking the first bevel gear 8-1 on the axially rotating cutting knife assembly 8 to rotate.

[0178] Since the cutting knife 8-2 and the first bevel gear 8-1 in the axially rotating cutting knife assembly 8 move coaxially and are fixed to each other, the cutting knife 8-2 rotates synchronously with the first bevel gear 8-1, thereby realizing automatic rotational cutting.

[0179] During its movement, rack 1-2 also triggers the locking trigger assembly 3. For a detailed description of the triggering process, see the aforementioned description of the configuration of the locking trigger assembly 3. Furthermore, triggering the locking trigger assembly 3 releases the tissue locking assembly 4. Specifically, when rack 1-2 drives its upper boss 1-7 to trigger the locking trigger assembly 3, when the top of boss 1-7 contacts the tip of the front tongue 3-2 on the locking trigger assembly 3, the tail hook 4-1 on the tissue locking assembly 4 is able to pass over the tail tongue 3-1 on the locking trigger assembly 3, disengaging from the tail tongue 3-1 on the locking trigger assembly 3. The puncture needle 4-3 in the tissue locking assembly 4 loses its lock on the tail tongue 3-1 on the locking trigger assembly 3 and, under the action of the fourth spring 4-4, is ejected back to its initial state. At this point, the puncture needle 4-3 precisely penetrates and is securely locked into the target resection group within the rotary cutter slot 8-4 of the axially rotating resection blade assembly 8.

[0180] Furthermore, when the trigger 1-1 is pulled back to a certain position and released, the trigger 1-1 returns to its initial position under the action of the first spring 1-7, and the trigger 1-1 simultaneously drives the rack 1-2 to reset, and the rack 1-2 acts on the spur gear 1-3 to reset, and the spur gear 1-3 drives the second bevel gear 1-4 to reset, and the second bevel gear 1-4 drives the first bevel gear 8-1 to reset, thereby driving the resection knife 8-2 to reset and return to its original position, thereby exposing the resection window 9-1 on the resection cavity assembly 9, and making the resection window 9-1 on the resection cavity assembly 9 open. At this time, the excitation assembly 1 resets to the next excitation state, thereby realizing the automatic reset function.

[0181] The mechanical continuous myocardial tissue resection system given in this example mainly realizes the continuous automatic rotary cutting function by the mutual coordination movement between pure mechanical structures, and the structure is stable and reliable.

[0182] At the same time, the mechanical continuous myocardial tissue resection system given in this example is stable and reliable and can be operated with one hand. Only a simple pull of the trigger is required to lock the target tissue to be resected, perform continuous automatic rotary cutting, and compress and store the resected tissue; at the same time, releasing the trigger resets it to the next excitation state. The entire operation is convenient, stable, and reliable.

[0183] The following describes the implementation process of the mechanical continuous myocardial tissue resection system in conjunction with the specific configuration of the mechanical continuous myocardial tissue resection system given in this example.

[0184] 1 to 12 , in specific applications, the present mechanical continuous myocardial tissue resection system first synchronously drives the tissue compression component 2 to stretch backward through the bolt assembly 5 until it stretches to a fixed distance L1; at this time, the tissue compression component 2 touches the fixed flange 4-2 (i.e., the fixed limiter) in the tissue locking component 4, and then drives the tissue locking component 4 to move backward in a straight line as a whole until the tail hook 4-1 of the tissue locking component 4 hooks the tail tongue 3-1 of the locking trigger component 3.

[0185] At that time, the bolt pulling assembly 5 is released, and the tissue compression assembly 2 rebounds to its original position through its own second spring 2-4, thereby completing the preliminary preparation work and being able to be used for resection surgery.

[0186] Then, it is only necessary to insert the resection cavity component 9 at the front end of the system through a minimally invasive incision (about 4 cm) and reach the site to be resected, and then the subsequent resection surgery can be performed, thus avoiding a large chest incision.

[0187] In the initial state of the system, the blade 8-2 of the axially rotating blade assembly 8 is entirely concealed within the inner cavity of the resection chamber assembly 9, so that the rotary blade groove 8-4 on the blade 8-2 corresponds to the resection window 9-1 of the resection chamber assembly 9, thereby making the resection window 9-1 open. At this time, the lateral resection window 9-1 on the resection chamber assembly 9 is precisely positioned to the target resection tissue.

[0188] The resection chamber component 9 in this system forms a complete sealed cavity inside under the sealing action of the sealing component 7, and forms a negative pressure system inside the resection chamber of the resection chamber component 9 under the action of the negative pressure component 6 and the negative pressure source component 10. The system forms an adsorption force at the resection window 9-1 of the resection chamber component 9, which can effectively and firmly adsorb the target resection tissue, and suck the target resection tissue from the resection window 9-1 in the resection chamber component 9 into the rotary cutting groove 8-4 on the removal knife 8-2 and preliminarily lock it.

[0189] Then, just need to simply pull back the trigger 1-1 of the excitation component 1, the trigger 1-1 drives the rack 1-2 to move synchronously, and the moving rack 1-2 pushes the front tongue 3-2 on the locking trigger component 3 to rotate upward through the boss 1-7 thereon, so that the trigger link 3-3 in the locking trigger component 3 moves in the clockwise direction as a whole. Because the trigger link 3-3 in the locking trigger component 3 is bilaterally symmetrical, L2=L3, and because the height H1 of the boss 1-7 is equal to the height H2 of the tail tongue 3-1, when the top of the boss 1-7 contacts the tongue tip of the front tongue 3-2, the tail hook 4-1 on the tissue locking component 4 will be disengaged from the tail tongue 3-1 of the locking trigger component 3. At this time, the tissue locking component 4 loses the lock of the tail tongue 3-1 of the locking trigger component 3, and is ejected back to the initial state under the action of its own fourth spring 4-4; at this time, the puncture needle 4-3 in the tissue locking component 4 accurately passes through and is firmly locked into the target excised tissue in the rotary cutting groove 8-4 on the removal knife 8-2. Subsequently, the locking trigger assembly 3 can move counterclockwise under the action of its own third spring 3-4, so that the front tongue 3-2 is reset to its original position and remains in contact with the boss 1-7.

[0190] When the trigger 1-1 in the trigger assembly 1 is further deflected, the linear motion of the rack 1-2 drives the spur gear 1-3 to rotate. The second bevel gear 1-4 and the spur gear 1-3 are fixed by a rotating shaft, which in turn converts the rotational motion of the second bevel gear 1-4 into a rotational motion, thereby driving the rotational motion of the first bevel gear 8-1 in the axially rotating resection blade assembly 8. Since the resection blade 8-2 and the first bevel gear 8-1 in the axially rotating resection blade assembly 8 move coaxially and are fixed to each other, the resection blade 8-2 rotates synchronously with the first bevel gear 8-1, thereby driving the resection blade 8-2 to automatically rotate and resect in the resection cavity assembly 9, thereby automatically resecting the target tissue entering the resection blade slot 8-4.

[0191] When the trigger 1-1 of the trigger assembly 1 is pulled back to a certain position and the trigger 1-1 is released, the trigger 1-1 returns to its initial position under the action of the first spring 1-7. The trigger 1-1 synchronously drives the rack 1-2 to reset, and the rack 1-2 acts on the spur gear 1-3 to reset, and the spur gear 1-3 drives the second bevel gear 1-4 to reset, and the second bevel gear 1-4 drives the first bevel gear 8-1 to reset, thereby driving the resection knife 8-2 to reset and return to its original position, thereby exposing the resection window 9-1 on the resection cavity assembly 9, so that the resection window 9-1 on the resection cavity assembly 9 is in an open state. At this time, the trigger assembly 1 resets to the next trigger state, thereby realizing the automatic reset function.

[0192] Furthermore, the target tissue that is cut off remains in the cutting knife groove 8-4 of the cutting knife 8-2 in the axially rotating cutting knife assembly 8, and the tissue compression assembly 2 can be stretched backward by the pull bolt assembly 5. After the tissue compression assembly 2 is stretched to a fixed distance L1, the tissue compression assembly 2 synchronously compresses the cut tissue from the cutting knife groove 8-4 of the cutting knife 8-2 to the bottom of the cutting knife 8-2, and synchronously drives the tissue locking assembly 4 to move backward in a straight line until the tail hook 4-1 of the tissue locking assembly 4 hooks the tail tongue 3-1 of the locking trigger assembly 3, preparing for the next cutting.

[0193] Thus, by repeating the above steps, the function of one-time insertion and continuous automatic peeling can be achieved.

[0194] Based on the above, those skilled in the art can determine that the mechanical continuous myocardial tissue resection system provided in this example has the following advantages in practical application:

[0195] (1) A minimally invasive incision (4 cm) is achieved, and treatment is completed in one puncture, reducing heart puncture and intraoperative bleeding. The heart does not stop beating, the amount of myocardial resection is accurately controlled, the resection plan is flexible, and the treatment effect is achieved in one step.

[0196] (2) Vacuum negative pressure is used to absorb tissue into the excision cavity to prevent the excised tissue from producing artificial thrombosis and its complications.

[0197] (3) Locking the tissue through the tissue locking mechanism to prevent the resected tissue from generating artificial thrombosis and its complications.

[0198] (4) Based on axial automatic rotation, myocardial tissue is removed to ensure the integrity of the target tissue and the smoothness of the incision, avoiding complications caused by wrinkles in the incision.

[0199] (5) Continuous myocardial resection can be achieved through tissue compression and automatic repositioning system until the therapeutic effect is achieved.

[0200] (6) The side orientation of the rotary incision is conducive to the resection of the hypertrophic myocardium of the ventricular septum below the aortic valve and the myocardium towards the apex.

[0201] (7) No power components are required, only manual actuation is required, and single-handed operation is highly stable, will not shift, and can accurately position. This avoids complications caused by displacement differences caused by two-handed operation.

[0202] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Mechanical continuous myocardial tissue resection system, including: The housing is characterized in that it also includes a resection cavity assembly, a bolt pulling assembly, an axially rotating resection knife assembly, a tissue locking assembly, a locking trigger assembly, and an excitation assembly; The resection cavity assembly is extended outward from the shell, and its internal cavity is communicated with the inner cavity of the shell. A resection window communicating with the internal cavity is formed on the side of the distal end of the resection cavity assembly; The axially rotating cutting blade assembly can be axially rotatably inserted in the cavity of the cutting cavity assembly, and the cutting portion at the front end thereof can form a continuous cutting action relative to the cutting window on the cutting cavity assembly based on the axial rotation; The tissue locking assembly is movably inserted in the axial rotating resection knife assembly and is configured to be able to move back and forth between a first position and a second position. In the first position, the target resection tissue entering the axial rotating resection knife assembly from the resection window can be locked, and in the second position, a first driving force facing the first position can be generated; the tissue locking assembly includes a tissue locking body and a fourth elastic component, the tissue locking body includes a puncture needle, the front section of the puncture needle can be movably inserted in the axial rotating resection knife assembly, and the rear section is provided with a limiting portion and a hook portion, the limiting portion is configured to be able to cooperate with the bolt pulling assembly, and the hook portion is configured to be able to lock and cooperate with the locking trigger assembly; the tissue locking body cooperates with the bolt pulling assembly through the limiting portion, can be driven from the first position to the second position by the bolt pulling assembly, and in the second position, the hook portion is locked and cooperated with the locking trigger assembly; the fourth elastic component is arranged in cooperation with the tissue locking body, configured to limit the movement of the tissue locking body to the first position in the initial state, and generate deformation to form an elastic restoring force facing the first position on the tissue locking body when the tissue locking body is driven to the second position; The locking trigger assembly is disposed in the housing and is configured to lock the tissue locking assembly moved to the second position and to be triggered to release the locked tissue locking assembly; The bolt pulling assembly is movably disposed on the housing and is configured to drive the tissue locking assembly to move from a first position to a second position and lock with the locking trigger assembly; The excitation assembly is movably disposed in the shell and is configured to be linked with the axially rotating resection knife assembly and the locking trigger assembly, synchronously triggering the locking trigger assembly during movement, releasing the locked tissue locking assembly, and synchronously driving the axially rotating resection knife assembly to perform continuous axial rotation.

2. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The resection system also includes a negative pressure component, which is arranged in cooperation with the resection cavity component and can form a negative pressure state in the internal cavity of the resection cavity component and form a negative pressure adsorption force on the resection window.

3. The mechanical continuous myocardial tissue resection system according to claim 2, characterized in that: The negative pressure component is also arranged in cooperation with the axially rotating cutting knife component, and can form a negative pressure state inside the axially rotating cutting knife component.

4. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The resection system also includes a tissue compression component, which is configured to cooperate with the axially rotating resection knife assembly, and can be linked with the bolt pull assembly, and can be moved relative to the axially rotating resection knife assembly under the drive of the bolt pull assembly, and can synchronously compress the tissue resected by the axially rotating resection knife assembly during the movement.

5. The mechanical continuous myocardial tissue resection system according to claim 4, characterized in that: The tissue compression assembly includes a tissue compression member body and a second elastic member, wherein the front section of the tissue compression member body can be movably inserted in the axially rotating resection knife assembly, and the rear section is configured to be arranged in linkage with the bolt pulling assembly, and can be driven from the third position to the fourth position under the linkage driving of the bolt pulling assembly; The second elastic component is arranged in cooperation with the tissue compressor body, and is configured to limit the movement of the tissue compressor body to the third position in the initial state, and when the tissue compressor body is driven to the fourth position by the bolt assembly, it deforms to form an elastic restoring force on the tissue compressor body facing the third position.

6. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The outer surface of the resection cavity body in the resection cavity assembly is formed with ultrasound imaging enhancement features.

7. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The axially rotating cutting blade assembly includes a cutting blade, and a cutting blade groove is formed on the cutting blade. The cutting blade groove is configured to cooperate with the cutting window in the cutting cavity assembly to form cutting on the target tissue to be cut that enters the cutting blade groove through the cutting window.

8. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The locking trigger assembly comprises a locking trigger body and a third elastic component, wherein the locking trigger body is rotatably arranged in the housing and configured to be able to rotate between a first state and a second state under the linkage drive of the excitation assembly, and when the locking trigger body is rotated to the first state, it can form a locking structure with the tissue locking assembly, and when it is rotated to the second state, it forms an unlocking structure relative to the tissue locking assembly; The third elastic component is arranged in cooperation with the locking trigger body, and is configured to limit the locking trigger body from rotating to the first state in the initial state, and when the locking trigger body is driven to the second state, deformation is generated to form an elastic restoring force on the locking trigger body facing the first state.

9. The mechanical continuous myocardial tissue resection system according to claim 1, characterized in that: The excitation component includes an excitation member body, a transmission member and a first elastic member; The trigger body is configured to be able to move in the housing under the drive of an external actuating force, and to synchronously and continuously drive the axially rotating cutting knife assembly to axially rotate during the movement, and to synchronously trigger the locking trigger assembly to a release state; The first elastic component is arranged in cooperation with the excitation member body, and is configured to limit the movement of the excitation member body to the initial position in the initial state, and when the excitation member body moves based on the external actuation force, deformation is generated to form an elastic restoring force on the excitation member body facing the initial position.

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