Myocardial rotary cutting system with inverted puncture needle

Abstract

The invention discloses a myocardial rotary cutting system with an inverted puncture needle. The myocardial rotary cutting system comprises a shell, and a rotary cutting device assembly and a negative pressure device assembly are arranged in the shell; the rotary cutting device assembly extends out of the shell, and an inner cavity of the rotary cutting device assembly communicates with an inner cavity of the shell. The side face, away from the shell, of the rotary cutting device assembly is provided with an excision window and a tissue storage chamber, the excision window communicates with an inner cavity of the rotary cutting device assembly, a rotary cutting pipe is arranged in the rotary cutting device assembly, one end of the rotary cutting pipe is connected with a first bevel gear, and a rotary cutting blade is formed at the other end of the rotary cutting pipe. The rotary cutting blade can form continuous axial cutting action relative to the cutting window based on axial rotation; when the rotary cutting pipe shields the cutting window, the cutting window is in a closed state; a puncture needle is arranged in the rotary cutting pipe, and a boss-shaped barb structure is arranged on the puncture needle in a sleeving manner; according to the invention, in a minimally invasive incision state, tissue locking, continuous mechanical rotary cutting and accurate cardiac muscle tissue excision can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a myocardial rotary cutting system containing a barbed puncture needle. Background Art

[0002] Hypertrophic cardiomyopathy (HCM) is reported to cause patients to experience exertional dyspnea, chest pain, palpitations, syncope, and even serious complications, leading to worsening of the disease or death. Although the incidence of sudden cardiac death is only 1%, it is still one of the main causes of death in HCM patients, especially in young patients, and is one of the main causes of sudden death in adolescents and athletes.

[0003] Hypertrophic obstructive cardiomyopathy is a hereditary heart disease characterized by a significant thickening of the ventricular septum. There are currently four main treatments: drug therapy, alcohol septal ablation, traditional open-chest surgery, and radiofrequency ablation. However, these surgeries have obvious shortcomings. Drug therapy can only bring varying degrees of symptom relief, but cannot fundamentally resolve the obstruction; open-chest surgery has a high risk and causes great harm to the human body; alcohol septal ablation and radiofrequency ablation are both accompanied by a series of complications.

[0004] Therefore, patients with hypertrophic obstructive cardiomyopathy are like a "time bomb" hidden deep in their bodies, but they are afraid of the risks of surgery and dare not undergo surgery to eradicate it. They only rely on drugs to relieve symptoms, which makes patients always shrouded in the psychological pressure of sudden death and live in fear of the unknown, seriously affecting their quality of life. Summary of the invention

[0005] In view of the problems existing in existing myocardial tissue resection instruments, the present invention provides a myocardial rotary resection system containing a barbed puncture needle, which can achieve continuous resection and precise resection of myocardial tissue under minimally invasive incision conditions.

[0006] To solve the above problems, the technical solution provided by the present invention is as follows:

[0007] The embodiment of the present invention provides a myocardial rotary cutting system containing a barbed puncture needle, comprising a housing (5), wherein a rotary cutting device component (1) and a negative pressure device component (3) are arranged in the housing (5);

[0008] The rotary cutting device assembly (1) extends outside the shell (5), and its internal cavity is connected to the internal cavity of the shell (5); a cutting window (1-4) and a tissue storage chamber (1-2) are arranged on a side of the rotary cutting device assembly (1) away from the shell (5), and the cutting window (1-4) is connected to its internal cavity; a rotary cutting tube (1-5) is arranged inside the rotary cutting device assembly (1), one end of the rotary cutting tube (1-5) is connected to a first bevel gear (1-6), and the other end is formed with a rotary cutting blade (1-12), and the rotary cutting blade (1-12) can form a continuous axial cutting action relative to the cutting window (1-4) based on axial rotation; when the rotary cutting tube (1-5) blocks the cutting window (1-4), the cutting window (1-4) is in a closed state;

[0009] The rotary cutting tube (1-5) is provided with a puncture needle (1-3), and the puncture needle (1-3) is provided with a boss-shaped barb structure (1-11); the negative pressure device assembly (3) is connected to a vacuum pump (3-1), and the vacuum pump (3-1) is connected to the internal cavity of the rotary cutting device assembly (1) to form a negative pressure adsorption force on the cutting window (1-4).

[0010] According to an optional embodiment of the present invention, it also includes a mechanical drive component (2), the mechanical drive component (2) includes a trigger (2-1), a hinge (2-2), a second spring (2-3), a rack (2-4), a trigger (2-6), a torsion spring (2-7), a limit pin (2-8) and a second bevel gear (2-10), and the puncture needle (1-3) is connected to the trigger (2-6); when the rotary cutting device component (1) is inserted into the tissue requiring surgery, the negative pressure device component (3) is turned on, and then the trigger (2-1) is manually pulled, the trigger (2-1) drives the hinge (2-2) to move, the hinge (2-2) drives the rack (2-4) to move, the rack (2-4) drives the second bevel gear (2-10) to move, and the second bevel gear (2-10) drives the first The bevel gear (1-6) rotates at a preset angle to open the rotary cutting window (1-4). After the tissue is adsorbed into the rotary cutting window (1-4), the puncture needle (1-3) instantly pierces the tissue when the trigger (2-1) and the limit pin (2-8) are released, and the target entering the cavity from the rotary cutting window (1-4) is punctured and fixed. The trigger (2-1) is continuously pulled until it stops, and the second bevel gear (2-10) links the first bevel gear (1-6) to rotate the rotary cutting blade 180 degrees to remove the target tissue; the trigger (2-1) is released, and under the action of the torsion spring (2-7), the trigger (2-1) is driven to reset the rotary cutting window (1-4) to close, and the trigger (2-6) is driven to drive the puncture needle (1-3) to return the rotary cut tissue to the tissue storage chamber (1-2).

[0011] According to an optional embodiment of the present invention, a goosenose head (4) is connected to the end of the rotary cutting device assembly (1), and the outer wall of the goosenose head (4) is smooth and can smoothly enter the target position to reduce obstacles.

[0012] According to an optional embodiment of the present invention, a compression rod (1-1) is provided in the rotary cutting device assembly (1). When the puncture needle (1-3) and the barb structure (1-11) push the rotary cut tissue, the compression rod (1-1) is driven by triggering the trigger (2-6) to move the rotary cut tissue to the tissue storage chamber (1-2), thereby avoiding the risk of the tissue falling into the body and causing thrombosis.

[0013] According to an optional embodiment of the present invention, a first spring (1-8) is wound around one end of the puncture needle (1-3) away from the rotary cutting device assembly (1).

[0014] Compared with the prior art, the embodiment of the present invention provides a myocardial rotary cutting system containing a barbed puncture needle, which has the following beneficial effects:

[0015] (1) The various functional components in the myocardial resection system provided by the present invention are mechanically linked to each other and have a reset function. This innovatively introduces the excision of tissue and its storage, thereby achieving continuous excision of target tissues in the body at the same time, and achieving continuous myocardial resection until the treatment effect is achieved, further increasing surgical efficiency, reducing bleeding risks, and increasing surgical success rates.

[0016] (2) The myocardial resection system provided by the present invention has a rotational window orientation that facilitates the resection of the hypertrophic myocardium of the ventricular septum below the aortic valve and the myocardium in the apical direction, and is also suitable for attending physicians who are accustomed to using their left hand.

[0017] (3) The myocardial resection system provided by the present invention can achieve a minimally invasive incision (4 cm) in actual application, reducing the puncture of the heart and the amount of bleeding during the operation. 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 time.

[0018] (4) The myocardial resection system provided by the present invention can be operated with one hand in actual application, and the one-hand operation is highly stable, will not shift, and can be precisely positioned. It can automatically complete the actions of opening the window, adsorption, rotary cutting, reservoir tissue, and closing the window with one button, avoiding complications caused by the displacement difference caused by two-hand operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 and Figure 2 A schematic structural diagram of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0021] Figure 3 A schematic diagram of the structure of a myocardial rotary cutting window of a rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0022] Figure 4 A schematic diagram of the structure of a rotary cutting blade of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0023] Figure 5 A schematic diagram of the puncture needle structure of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0024] Figure 6 A schematic structural diagram of a myocardial rotary cutting system including a barbed puncture needle, a rotary cutting window, and a tissue storage chamber provided in an embodiment of the present application.

[0025] Figure 7 A schematic diagram of the structure of a mechanical drive component of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0026] Figure 8 A functional schematic diagram of the connection of the exfoliation cavity and the negative pressure vacuum assembly of a myocardial exfoliation system containing a barbed puncture needle provided in an embodiment of the present application.

[0027] Fig. 9 A schematic diagram of the appearance of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application.

[0028] Fig.10 A schematic diagram of a compression rod of a myocardial rotary cutting system containing a barbed puncture needle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] like Figures 1 to 10 As shown, an embodiment of the present invention provides a myocardial rotary cutting system containing a barbed puncture needle, including a shell 5, in which a rotary cutting device component 1 and a negative pressure device component 3 are arranged.

[0031] The rotary cutting device assembly 1 extends outside the housing 5, and its internal cavity is connected to the inner cavity of the housing 5; the rotary cutting device assembly 1 is provided with a cutting window 1-4 and a tissue storage chamber 1-2 on a side away from the housing 5, Figure 3 and Figure 6 The cutting window 1-4 is connected to its internal cavity, and a cutting tube 1-5 is arranged in the cutting device assembly 1. One end of the cutting tube 1-5 is connected to the first bevel gear 1-6, and the other end is formed with a cutting blade 1-12. The cutting blade 1-12 can form a continuous axial cutting action relative to the cutting window 1-4 based on axial rotation; when the cutting tube 1-5 blocks the cutting window 1-4, the cutting window 1-4 is in a closed state.

[0032] like Figure 2 , Figure 5 and Figure 6 As shown, a puncture needle 1-3 is arranged in the rotary cutting tube 1-5, and the puncture needle 1-3 is sleeved with a boss-shaped barb structure 1-11, and a first spring 1-8 is wound around the end of the puncture needle 1-3 away from the rotary cutting device assembly 1. A sleeve 1-9 is also arranged outside the puncture needle 1-3, and a slot 2-9 is opened in the sleeve 1-9.

[0033] like Figure 2 and Figure 8 As shown, the negative pressure device assembly 3 is connected to a vacuum pump 3-1, and the vacuum pump 3-1 is connected to the internal cavity of the rotary cutting device assembly 1, and the two are sealed by a sealing ring 3-2. The negative pressure device assembly in this embodiment is arranged in conjunction with the rotary cutting device assembly to form a negative pressure state in the internal cavity of the rotary cutting device assembly, and to form a negative pressure adsorption force in the resection window 1-4, which can further prevent the resected tissue from generating artificial thrombosis and its complications.

[0034] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10As shown, the myocardial rotary cutting system also includes a mechanical drive assembly 2, which includes a trigger 2-1, a hinge 2-2, a second spring 2-3, a rack 2-4, a trigger 2-6, a torsion spring 2-7, a limit pin 2-8 and a second bevel gear 2-10. The puncture needle 1-3 is connected to the trigger 2-6, and the hinge 2-2 is fixed to the housing 5 by screws 2-11 and screws 2-5. When the rotary cutting device assembly 1 is extended into the tissue requiring surgery, the negative pressure device assembly 3 is opened, and then the trigger 2-1 is manually pulled, the trigger 2-1 drives the hinge 2-2 to move, the hinge 2-2 drives the rack 2-4 to move, the rack 2-4 drives the second bevel gear 2-10 to move, and the second bevel gear 2-10 links the first bevel gear 1-6 to rotate a preset angle, so that the rotary cutting window 1-4 is opened, and after the tissue is adsorbed into the rotary cutting window 1-4, the puncture needle 1-3 is moved between the trigger 2-1 and the limit pin 2-8 The tissue is pierced instantly upon release, and the target entering the cavity from the rotary cutting window 1-4 is punctured and fixed. The trigger 2-1 is continuously pulled until it stops, and the second bevel gear 2-10 links the first bevel gear 1-6 to rotate the rotary cutting blade 180° to remove the target tissue; the trigger 2-1 is released, and under the action of the torsion spring 2-7, the trigger 2-1 is driven to reset the rotary cutting window 1-4 and close it, and the plate-driven trigger 2-6 drives the puncture needle 1-3 and the compression rod 1-1 to return the rotary cut tissue to the tissue storage chamber 1-2. At the same time, the rack is pushed to reset, the puncture needle is reset, and the release trigger is reset under the action of the spring to prepare for the next round of resection. The myocardial rotary cutting system of the present invention can achieve tissue locking, continuous mechanical rotary cutting, and precise resection of myocardial tissue in a minimally invasive incision state.

[0035] like Figure 3 , Figure 6 and Fig.10 As shown, the end of the rotary cutting device assembly 1 is connected to a gooseneck head 4, the outer wall of which is smooth and can smoothly enter the target position to reduce obstacles. When the puncture needle 1-3 and the barb structure 1-11 push the rotary cut tissue, the compression rod 1-1 moves it to the tissue storage chamber 1-2 to avoid the risk of tissue falling into the body and causing thrombosis.

[0036] The whole component plays a role in protecting the tissue from being scratched by the rotary cutting window 1-4 during the process of entering the myocardial chamber. When reaching the target position, the rotary cutting window 1-4 is closed. By manually pulling the trigger of the mechanical driving component 2, the second bevel gear 2-10 finally links the first bevel gear 1-6 to rotate a preset angle, so that the rotary cutting window 1-4 is opened. After the tissue is removed, the trigger is released and the window is closed, so as to prevent the whole component from scratching the tissue during the process of withdrawing from the human body, thereby causing inflammation or infection. The preset angle is 0 to 180 degrees.

[0037] The opening direction of the rotary cutting windows 1-4 in this embodiment is on the left side of the instrument and is arranged perpendicular to the ground. When the instrument enters from the apex, the target is on the left side of the rotary cutting rod, which can effectively solve the problem that the surgeon is left-handed. The surface of the resection cavity body of the rotary cutting device assembly 1 is formed with ultrasound imaging enhancement features or the resection cavity body in the assembly uses a polymer material with added barium sulfate to enhance ultrasound imaging.

[0038] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to them. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered within the protection scope of the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope defined by the claims.

Claims

1. A myocardial rotary cutting system containing a barbed puncture needle, characterized in that: It comprises a housing (5), wherein a rotary cutting device assembly (1) and a negative pressure device assembly (3) are arranged in the housing (5); The rotary cutting device assembly (1) extends outside the shell (5), and its internal cavity is connected to the internal cavity of the shell (5); a cutting window (1-4) and a tissue storage chamber (1-2) are arranged on a side of the rotary cutting device assembly (1) away from the shell (5), and the cutting window (1-4) is connected to its internal cavity; a rotary cutting tube (1-5) is arranged inside the rotary cutting device assembly (1), one end of the rotary cutting tube (1-5) is connected to a first bevel gear (1-6), and the other end is formed with a rotary cutting blade (1-12), and the rotary cutting blade (1-12) can form a continuous axial cutting action relative to the cutting window (1-4) based on axial rotation; when the rotary cutting tube (1-5) blocks the cutting window (1-4), the cutting window (1-4) is in a closed state; The rotary cutting tube (1-5) is provided with a puncture needle (1-3), and the puncture needle (1-3) is provided with a boss-shaped barb structure (1-11); the negative pressure device assembly (3) is connected to a vacuum pump (3-1), and the vacuum pump (3-1) is connected to the internal cavity of the rotary cutting device assembly (1) to form a negative pressure adsorption force on the cutting window (1-4).

2. A myocardial rotary cutting system containing a barbed puncture needle according to claim 1, characterized in that: The invention also comprises a mechanical drive assembly (2), wherein the mechanical drive assembly (2) comprises a trigger (2-1), a hinge (2-2), a second spring (2-3), a rack (2-4), a trigger (2-6), a torsion spring (2-7), a limit pin (2-8) and a second bevel gear (2-10), wherein the puncture needle (1-3) is connected to the trigger (2-6); when the rotary cutting device assembly (1) is inserted into a tissue requiring surgery, the negative pressure device assembly (3) is turned on, and then the trigger (2-1) is manually pulled, the trigger (2-1) drives the hinge (2-2) to move, the hinge (2-2) drives the rack (2-4) to move, the rack (2-4) drives the second bevel gear (2-10) to move, and the second bevel gear (2-10) is linked to the first bevel gear (1- 6) Rotate the preset angle to open the rotary cutting window (1-4). After the tissue is adsorbed into the rotary cutting window (1-4), the puncture needle (1-3) instantly pierces the tissue when the trigger (2-1) and the limit pin (2-8) are released, and the target entering the cavity from the rotary cutting window (1-4) is punctured and fixed. The trigger (2-1) is continuously pulled until it stops. The second bevel gear (2-10) links the first bevel gear (1-6) to rotate the rotary cutting blade 180° to remove the target tissue. Release the trigger (2-1). Under the action of the torsion spring (2-7), the trigger (2-1) is driven to reset the rotary cutting window (1-4) to close. The trigger (2-6) is driven to drive the puncture needle (1-3) to return the rotary cut tissue to the tissue storage chamber (1-2).

3. A myocardial rotary cutting system containing a barbed puncture needle according to claim 2, characterized in that: The end of the rotary cutting device assembly (1) is connected to a gooseneck head (4), and the outer wall of the gooseneck head (4) is smooth and can smoothly enter the target position to reduce obstacles.

4. A myocardial rotary cutting system containing a barbed puncture needle according to claim 3, characterized in that: A compression rod (1-1) is arranged in the rotary cutting device assembly (1). When the puncture needle (1-3) and the barb structure (1-11) push the rotary cut tissue, the compression rod (1-1) is driven by the trigger (2-6) to move the rotary cut tissue to the tissue storage chamber (1-2), thereby avoiding the risk of the tissue falling into the body and causing thrombosis.

5. The myocardial rotary cutting system containing a barbed puncture needle according to claim 1, characterized in that: A first spring (1-8) is wound around one end of the puncture needle (1-3) away from the rotary cutting device assembly (1).

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