Ventricle punching device

Abstract

The utility model belongs to the technical field of medical instruments and discloses a ventricle punching device which comprises a pull rod and a sleeve movably sleeved outside the pull rod, and a tool bit is arranged at the lower end of the pull rod. The double-edge punching knife comprises an inner edge and an outer edge, the outer edge is a circle of knife edge arranged along the edge of the lower end of the sleeve, and the inner edge is an end knife edge arranged along the upper edge of the knife head; the pull rod moves up and down in the sleeve to achieve closing or opening of the outer blade and the inner blade. The punching device is simple in structure, easy to operate, high in punching precision and capable of achieving convenient punching.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a ventricular punching device. Background Art

[0002] Cardiovascular disease, a serious threat to human health, comprises a wide range of conditions, including hypertension, coronary heart disease, hyperlipidemia, cardiomyopathy, heart failure, and arrhythmias. Among these cardiovascular diseases, heart failure has a high prevalence and a heavy disease burden in my country, and the diagnosis and treatment of end-stage heart failure, in particular, still face numerous challenges.

[0003] Currently, an artificial heart is the only effective treatment option for patients with end-stage or severe heart failure, aside from heart transplantation. The primary function of an artificial heart is to create an auxiliary flow path for the patient's heart, supporting blood circulation. When the artificial heart is operating, blood from the left ventricle flows through the afferent vessels into the blood pump. Centrifugal force generated by the rotation of the impeller within the blood pump pushes the blood out of the pump and into the ascending aorta through the afferent vessels, thereby assisting the patient's blood circulation.

[0004] A ventricular puncher is an essential tool in artificial heart surgery. It is used to precisely create a hole of the desired diameter in the ventricular wall or blood vessel wall to connect to an inlet blood vessel or blood pump. This ensures a smooth inner wall, minimizing damage to cardiac tissue and aiding postoperative recovery. However, some patients with end-stage or severe heart failure often experience conditions such as cardiac enlargement, myocardial hypertrophy, and fibrosis. Existing punchers are not suitable for these patients and may result in inaccurate punching locations or improper operation, making it difficult to quickly and easily perform the procedure. This increases the difficulty and risk of the procedure. Utility Model Content

[0005] The purpose of the utility model is to provide a ventricular punching device, which has a simple structure, is easy to operate, has a high degree of punching precision, and can realize convenient punching.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A ventricular punching device includes a pull rod and a sleeve movably mounted on the outside of the pull rod, and a cutting head is provided at the lower end of the pull rod; it also includes a double-edged punching knife, and the double-edged punching knife includes an inner blade and an outer blade, wherein the outer blade is a circle of blades arranged along the lower end edge of the sleeve, and the inner blade is an end blade arranged along the upper edge of the blade head; the pull rod moves up and down in the sleeve to realize the closing or opening of the outer blade and the inner blade.

[0008] Furthermore, the sleeve includes an upper tube body, a middle column body and a lower tube body in order from top to bottom. The upper end of the middle column body is provided with a receiving groove for the pull rod to pass through, and a bottom through hole is provided at the bottom of the receiving groove.

[0009] A plug body is fixed on the upper end of the pull rod, and the diameter of the plug body is smaller than the inner diameter of the upper tube body; a spring is provided in the accommodating groove, the upper end of the spring abuts against the bottom of the plug body, and the lower end abuts against the bottom of the accommodating groove.

[0010] Furthermore, a hand support member is provided on the outer periphery of the middle column.

[0011] Furthermore, a drainage hole is provided on the side wall of the upper tube body.

[0012] Furthermore, the upper end of the plug body extends out of the upper tube body, and a pull ring is fixed on the top of the plug body.

[0013] Furthermore, the cutter head is a conical structure with the tip pointing downward.

[0014] Furthermore, the blade inclination angles of the outer blade and the inner blade are both 15-20 degrees.

[0015] The beneficial effects of the present invention are:

[0016] 1. The overall structure of the utility model is simple, and punching can be achieved by pushing and pulling, which is easy to operate; and the cooperation of the outer blade and the inner blade can achieve fast and convenient punching, high accuracy and strong practicality.

[0017] 2. The spring of the utility model can drive the lower part of the pull rod to retract upward, so that the outer blade and the inner blade are in a closed state, which is not only beneficial to protecting the blade head, but also prevents medical staff from accidentally touching the outer blade or the inner blade and cutting their fingers, which is highly safe. In addition, the spring can also maintain a certain tension, so that the punching device of the utility model maintains a stable contact force and appropriate pressure during operation, which can improve the accuracy and depth of the punching.

[0018] 3. The hand support member of the utility model can play the role of anti-slip and stabilizing device when in use.

[0019] 4. The pull ring of the present invention is a circular ring structure with a natural grip point, which is more convenient to use. At the same time, compared with other non-circular designs, the circular ring pull ring reduces sharp or protruding edges, reduces the risk of scratching fingers or skin during use, and improves safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 yes Figure 1 A perspective structural diagram of .

[0023] Figure 3 yes Figure 1 Schematic diagram of a structure along the AA surface.

[0024] Figure 4 yes Figure 3 A schematic diagram of a local enlarged structure.

[0025] Figure 5 A side view structural diagram of FIG.

[0026] Figure 6 yes Figure 5 A perspective structural diagram of .

[0027] Figure 7 yes Figure 6 Schematic diagram of a structure along the BB surface.

[0028] In the figure: 1. Pull rod, 2. Sleeve; 3. Cutting head; 4. Double-edged punch; 5. Receiving groove; 6. Bottom through hole; 7. Plug; 8. Spring; 9. Hand support; 10. Drain hole; 11. Pull ring

[0029] 201. Upper tube body; 202. Middle column; 203. Lower tube body;

[0030] 401. Inner blade; 402. Outer blade. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will be described clearly and completely in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 7As shown, a ventricular punching device includes a pull rod 1 and a sleeve 2 movably mounted on the outside of the pull rod 1, and a cutting head 3 is provided at the lower end of the pull rod 1; it also includes a double-edged punching knife 4, and the double-edged punching knife 4 includes an inner blade 401 and an outer blade 402, wherein the outer blade 402 is a circle of blades arranged along the lower end edge of the sleeve 2, and the inner blade 401 is an end blade arranged along the upper edge of the blade head 3; the pull rod 1 moves up and down in the sleeve 2 to realize the closing or opening of the outer blade 402 and the inner blade 401.

[0033] The punching device of the present invention is mainly used for punching holes on the ventricular wall or blood vessel wall during artificial heart surgery. During operation, the cutter head 3 is first aligned with the position where the hole needs to be punched and positioned through preliminary contact, and then the pull rod 1 is pushed downward so that the cutter head 3 and the inner blade 401 enter the patient's ventricular wall or blood vessel wall, while the outer blade 402 is located outside the ventricular wall or blood vessel wall. At this time, the outer blade 402 and the inner blade 401 are open. Then pull the pull rod 1 outward so that the outer blade 402 and the inner blade 401 contact and close, and cut the tissue between the outer blade 402 and the inner blade 401 to complete the punching operation. The overall structure of the present invention is simple, and punching can be achieved by pushing and pulling, which is easy to operate; and the cooperation between the outer blade 402 and the inner blade 401 can achieve quick and convenient punching, with high accuracy and strong practicality.

[0034] In the present invention, the outer blade 402 and the inner blade 401 have the same tip diameter, and the blade head 3 is a tapered structure with the tip pointing downward. The tapered structure of the blade head 3 enables fast and accurate positioning and drilling, avoiding damage such as stretching and twisting of the ventricular wall or blood vessel wall by the blade head 3 during drilling.

[0035] like Figure 3 、 Figure 4 and Figure 7 As shown, in the present invention, the blade inclination angles of the outer blade 402 and the inner blade 401 are both 15-20 degrees. The inclination angle refers to the inclination angle of the blade inclined surface relative to the vertical direction. The blade inclination angle of the outer blade 402 is shown in FIG. Figure 4 α in FIG4 , and the blade inclination angle of inner blade 401 is detailed in β in FIG4 . The aforementioned inclination angles of outer blade 402 and inner blade 401 reduce the radius of the arc projected onto the plane of the ventricular wall or vascular wall, making the blade sharper. This reduces the rupture force and displacement, improving cutting efficiency and minimizing damage to surrounding tissue. In a preferred embodiment of the present invention, the blade inclination angles of outer blade 402 and inner blade 401 are both 20°.

[0036] like Figures 1 to 7As shown, in the present invention, the sleeve 2 includes an upper tube body 201, a middle column 202 and a lower tube body 203 from top to bottom. The upper end of the middle column 202 is provided with a receiving groove 5 for the pull rod 1 to pass through, and the bottom of the receiving groove 5 is provided with a bottom through hole 6;

[0037] A plug body 7 is fixed to the upper end of the pull rod 1, and the diameter of the plug body 7 is smaller than the inner diameter of the upper tube 201; a spring 8 is provided in the accommodating groove 5, the upper end of the spring 8 abuts against the bottom of the plug body 7, and the lower end abuts against the bottom of the accommodating groove 5.

[0038] The sleeve 2 is designed to cooperate with the pull rod 1, protecting it from damage and extending the life of the device. The sleeve 2 is divided into three parts to facilitate cooperation with different components. The upper tube 201 is primarily used to assemble and limit the plug 7; the middle column 202 is primarily used to assemble the spring 8; and the lower tube 203 is primarily used to accommodate the outer blade 402, which facilitates cooperation with the inner blade 401 for drilling.

[0039] The spring 8 in the present invention is a coil spring 8, which is sleeved on the outside of the pull rod 1. The upper end of the coil spring is fixedly connected to the bottom of the plug body 7, and the lower end is fixedly connected to the bottom of the receiving groove 5. When the device of the present invention is not in use, the lower portion of the pull rod 1 is retracted upward under the action of the spring 8, so that the outer blade 402 and the inner blade 401 are in a closed state. This not only helps protect the blade head 3, but also prevents medical personnel from accidentally touching the outer blade 402 or the inner blade 401 and cutting their fingers, thereby improving safety.

[0040] Spring 8 also serves as a reset mechanism. Once the perforation operation is complete, spring 8 automatically returns the device to its initial state, preparing for the next operation, helping to maintain the device's stability and continuous operability. It also absorbs and disperses impact forces, providing a buffering and shock-absorbing effect. During ventricular perforation, the entire device may be subject to a reaction force from the cardiac tissue. The presence of spring 8 mitigates this impact, protecting the device and cardiac tissue from damage. Furthermore, spring 8 maintains a certain tension, allowing the perforation device of the present invention to maintain stable contact force and appropriate pressure during operation, which improves the accuracy and depth of the perforation.

[0041] like Figure 1 、 Figure 2 、 Figures 5 to 7 As shown, in the present invention, a hand support member 9 is further provided on the outer periphery of the middle column 202. The hand support member 9 is mainly used for medical personnel to grasp during work, and is mainly used as a handle. It can play the role of anti-slip and stabilizing device during use, and the number of hand support members 9 in the present invention is more than one.

[0042] In one embodiment of the present invention, the hand support member 9 is a rod-shaped structure, one end of which is threadedly connected to the central column 202, while the other end is suspended. Specifically, the central column 202 is provided with a threaded hole, and one end of the hand support member 9 is provided with an external thread structure to mate with the threaded hole. In this embodiment, there are two hand support members 9, each positioned at a position corresponding to any diameter of the central column 202, i.e., the central axes of the two hand support members 9 of the rod-shaped structure coincide.

[0043] like Figure 2 、 Figures 5 to 7 As shown, in the present invention, the side wall of the upper tube 201 is further provided with a drainage hole 10. The drainage hole 10 is mainly used to drain the blood that enters the sleeve 2 during the punching process. There are more than one drainage hole 10, and the diameter of the drainage hole 10 in the present invention is 2-5 mm, preferably 2 mm.

[0044] like Figures 1 to 7 As shown, in the present invention, the upper end of the plug body 7 extends outside the upper tube 201, and a pull ring 11 is fixed to the top of the plug body 7. The pull ring 11 is in the shape of a ring. The pull ring 11 of the present invention has a natural grip point, allowing the operator to easily grasp and pull it regardless of which hand or finger is used. It is suitable for people with different hand shapes and strengths, and is more convenient to use. At the same time, compared with other non-ring designs, the ring-shaped pull ring 11 has fewer sharp or protruding edges, reducing the risk of scratching fingers or skin during use, and improving user safety.

[0045] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the scope of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A ventricular punching device, characterized in that: The invention comprises a pull rod (1) and a sleeve (2) movably mounted on the outside of the pull rod (1), wherein a cutter head (3) is provided at the lower end of the pull rod (1); and further comprises a double-edged punch knife (4), wherein the double-edged punch knife (4) comprises an inner blade (401) and an outer blade (402), wherein the outer blade (402) is a circle of blades arranged along the lower end edge of the sleeve (2), and the inner blade (401) is an end blade arranged along the upper edge of the cutter head (3); the pull rod (1) moves up and down in the sleeve (2) to realize the closing or opening of the outer blade (402) and the inner blade (401).

2. The ventricular punching device according to claim 1, characterized in that: The sleeve (2) comprises an upper tube (201), a middle column (202) and a lower tube (203) in order from top to bottom. The upper end of the middle column (202) is provided with a receiving groove (5) for the pull rod (1) to pass through, and the bottom of the receiving groove (5) is provided with a bottom through hole (6); A plug body (7) is fixed to the upper end of the pull rod (1), and the diameter of the plug body (7) is smaller than the inner diameter of the upper tube body (201); a spring (8) is provided in the receiving groove (5), the upper end of the spring (8) abuts against the bottom of the plug body (7), and the lower end abuts against the bottom of the receiving groove (5).

3. The ventricular punching device according to claim 2, characterized in that: A hand support member (9) is also provided on the outer periphery of the middle column (202).

4. The ventricular punching device according to claim 2 or 3, characterized in that: The side wall of the upper tube body (201) is also provided with a drainage hole (10).

5. The ventricular punching device according to claim 2 or 3, characterized in that: The upper end of the plug body (7) extends out of the upper tube body (201), and a pull ring (11) is fixed on the top of the plug body (7).

6. The ventricular puncture device according to claim 4, characterized in that: The upper end of the plug body (7) extends out of the upper tube body (201), and a pull ring (11) is fixed on the top of the plug body (7).

7. The ventricular puncture device according to claim 1, 2, 3 or 6, characterized in that: The cutter head (3) is a conical structure with the cone tip pointing downward.

8. The ventricular puncture device according to claim 1, 2, 3 or 6, characterized in that: The outer blade (402) and the inner blade (401) both have an inclination angle of 15-20 degrees.

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