Heart valve cutting and separating tool for transcatheter interventional operation

Abstract

The invention relates to the technical field of medical instruments, in particular to a heart valve cutting and separating tool for transcatheter interventional surgery, which comprises a control rod, an adjusting ring and a sheathing canal, the adjusting ring is mounted on the outer side of the control rod, the sheathing canal is connected to the upper end of the control rod, a guide catheter is inserted in the sheathing canal, and the guide catheter is connected with the control rod. A separation assembly is arranged at the end of the guide catheter, and a cutting assembly is arranged on the outer side of the guide catheter. Through the arrangement of the separation assembly and the guide catheter, the connecting rod can be conveniently driven to achieve direction and angle change, and therefore the connecting rod can reach the affected part; through the connecting rod, an access channel is conveniently established for the cutting assembly to enter an affected part in the body of a patient, auxiliary positioning is provided, and the size accuracy is guaranteed; and through the arrangement of the cutting assembly, the heart valve of the patient can be conveniently separated and cut, so that the problems of sliding or displacement and the like caused by placing the balloon in the traditional technology are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a cutting and separating tool for a heart valve used in transcatheter interventional surgery. Background Art

[0002] Heart valve diseases are caused by congenital or acquired reasons, resulting in changes in heart valve lesions and causing disorders in heart blood flow. When the heart valve is diseased, two situations will occur: one is that the valve orifice is stenotic, and the blood flow in the heart is not smooth; the other is that the valve is insufficiently closed, so that the blood flow will flow in two directions, forward and backward, when the heart contracts.

[0003] Interventional surgery is an advanced treatment method that only requires local anesthesia and a small incision of 1-2 mm, so it has the advantages of less bleeding, less trauma, quick postoperative recovery, safety and reliability.

[0004] In the existing medical means, the heart valve is often separated by means of a balloon. However, the balloon will slide, and there is even a risk of annulus tearing and calcified plaque shedding, which affects the treatment effect. For this reason, we propose a cutting and separating tool for a heart valve used in transcatheter interventional surgery to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a cutting and separating tool for a heart valve used in transcatheter interventional surgery to solve the problem that in the existing medical means, the heart valve is often separated by means of a balloon, but the balloon will slide, and there is even a risk of annulus tearing and calcified plaque shedding, which affects the treatment effect as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A cutting and separating tool for a heart valve used in transcatheter interventional surgery, including a control rod, an adjustment ring and a sheath tube. The adjustment ring is installed on the outer side of the control rod, the upper end of the control rod is connected with the sheath tube, a guiding catheter is inserted into the sheath tube, a separating component is arranged at the end of the guiding catheter, and a cutting component is arranged on the outer side of the guiding catheter;

[0007] The separating component includes a connecting rod, a positioning ring, a first rotating shaft and a separating head. The connecting rod is installed at the end of the guiding catheter, the positioning ring is arranged on the outer side of the connecting rod, two pairs of first rotating shafts are arranged inside the positioning ring, and the separating head is arranged on the outer side of the first rotating shaft;

[0008] The cutting component includes a fixing piece, a cutting head and a cutting blade. Two groups of fixing pieces are installed on the outer side of the connecting rod, the cutting head is arranged inside each of the two groups of fixing pieces, and the cutting blades are equidistantly arranged on the outer surface of the cutting head;

[0009] The separation component and the cutting component are used in cooperation to form a capture head.

[0010] Preferably, a stabilizing component is provided at the bottom of the connecting rod. The stabilizing component includes a connecting block, a second rotating shaft, a movable rod, and a sliding groove. A connecting block is fixedly connected to the bottom of the connecting rod. Four groups of second rotating shafts are rotatably connected inside the connecting block. A movable rod is fixedly connected between two groups of the second rotating shafts. A sliding groove is formed inside the separation head. The other end of the movable rod is arranged inside the sliding groove.

[0011] Preferably, the upper end of the connecting rod is connected to the end of the guiding catheter. The inner wall of the positioning ring is fixedly connected to the surface of the connecting rod. The inner end of the first rotating shaft is rotatably connected to the positioning ring. The other end of the first rotating shaft is fixedly connected to the separation head. The outer surface of the separation head is adapted to the inner diameter of the sheath tube.

[0012] Preferably, two groups of cutting heads are located on the inner wall of the separation head. The lower end of the cutting head is rotatably connected to the fixing member. The cutting piece is a right triangle with the inclined surface facing upward.

[0013] Preferably, an adjusting component is provided at the upper end of the cutting piece. The adjusting component includes a fixing hole, a fixing ring, and a traction rope. A fixing hole is formed at the upper end of the cutting piece. A fixing ring is connected inside the fixing hole. The outer end of the fixing ring is fixedly connected to the traction rope. The traction rope is connected to the adjusting ring.

[0014] Preferably, positioning holes are equidistantly formed on the outer surface of the separation head. The diameter of the positioning hole is adapted to the cutting piece.

[0015] Preferably, a protective ring is connected to the outer sides of the upper ends of two groups of the separation heads. The protective ring has a certain toughness.

[0016] Preferably, two groups of sliders are fixedly connected to the front and rear sides of the upper end of the movable rod. The diameter of the sliding groove is adapted to the slider.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. Through the setting of the separation component of the present invention, the connecting rod can be driven through the guiding catheter to realize the change of direction and angle, so that the connecting rod can reach the diseased part; through the connecting rod, it is convenient to establish an access channel for the cutting component to enter the diseased part in the patient's body, provide auxiliary positioning, and ensure the dimensional accuracy.

[0019] 2. Through the setting of the cutting component of the present invention, it is convenient to separate and cut the patient's heart valve, thus solving the problems such as sliding or displacement generated by placing the balloon in the traditional technology.

[0020] 3. Through the combined use of the separation component and the cutting component, the transcatheter edge-to-edge repair is achieved in the form of a capture structure, thereby reducing the regurgitation area. The operation method is simple and convenient for the operator, shortening the operation time, reducing the degree of trauma, and reducing the operation difficulty and risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a front view structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural cross-sectional schematic diagram of the sheath tube of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the separation component and the separation component of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the stable component of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the adjustment component of the present invention.

[0027] In the figure: 1. Control rod; 2. Adjusting ring; 3. Sheath tube; 4. Guide catheter; 5. Separation component; 501. Connecting rod; 502. Positioning ring; 503. First rotating shaft; 504. Separation head; 6. Cutting component; 601. Fixed part; 602. Cutting head; 603. Cutting blade; 7. Stable component; 71. Connecting block; 72. Second rotating shaft; 73. Movable rod; 74. Chute; 75. Slide block; 8. Adjustment component; 81. Fixed hole; 82. Fixed ring; 83. Traction rope; 9. Positioning hole; 10. Protective ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1-5, an embodiment provided by the present invention: A cutting and separating tool for a heart valve in a transcatheter interventional operation, including a control rod 1, an adjusting ring 2 and a sheath 3. The adjusting ring 2 is installed on the outer side of the control rod 1, the upper end of the control rod 1 is connected to the sheath 3, a guiding catheter 4 is inserted into the sheath 3, a separating component 5 is arranged at the end of the guiding catheter 4, and a cutting component 6 is arranged on the outer side of the guiding catheter 4;

[0030] The separating component 5 includes a connecting rod 501, a positioning ring 502, a first rotating shaft 503 and a separating head 504. The connecting rod 501 is installed at the end of the guiding catheter 4, the positioning ring 502 is arranged on the outer side of the connecting rod 501, two pairs of first rotating shafts 503 are arranged inside the positioning ring 502, and the separating head 504 is arranged on the outer side of the first rotating shaft 503;

[0031] The cutting component 6 includes a fixing part 601, a cutting head 602 and a cutting blade 603. Two groups of fixing parts 601 are installed on the outer side of the connecting rod 501, the cutting head 602 is arranged inside each of the two groups of fixing parts 601, and the cutting blades 603 are equidistantly arranged on the outer surface of the cutting head 602;

[0032] The separating component 5 and the cutting component 6 are used in cooperation to form a capture head;

[0033] By the settings of the separating component 5 and the cutting component 6 in this device, the problem that in the existing medical means, the heart valve is often separated by means of a balloon, but the balloon will slide, and there is even a risk of valve ring tearing and calcified plaque shedding, affecting the treatment effect, is solved.

[0034] Further, a stabilizing component 7 is arranged at the bottom of the connecting rod 501. The stabilizing component 7 includes a connecting block 71, a second rotating shaft 72, a movable rod 73 and a sliding groove 74. The connecting block 71 is fixedly connected to the bottom of the connecting rod 501, four groups of second rotating shafts 72 are rotatably connected inside the connecting block 71, the movable rod 73 is fixedly connected between two groups of second rotating shafts 72, a sliding groove 74 is opened inside the separating head 504, and the other end of the movable rod 73 is arranged inside the sliding groove 74. As Figure 4 shown, this structure is used to, by the setting of the stabilizing component 7, after the connecting rod 501 is moved to a specified position, when the separating head 504 rotates outwards through the first rotating shaft 503, the movable rod 73 is rotatably connected to the connecting block 71, so that the other end of the movable rod 73 moves along the sliding groove 74, playing a guiding role for the separating head 504 and improving the stability of the device.

[0035] Further, the upper end of the connecting rod 501 is connected to the end of the guiding catheter 4, the inner wall of the positioning ring 502 is fixedly connected to the surface of the connecting rod 501, the inner end of the first rotating shaft 503 is rotatably connected to the positioning ring 502, the other end of the first rotating shaft 503 is fixedly connected to the separating head 504, and the outer surface of the separating head 504 is adapted to the inner diameter of the sheath 3. AsFigure 3 As shown, this structure is used to deliver the sheath tube 3 to a specified position, and then control the guiding catheter 4 to push the connecting rod 501 to move along the inner wall of the sheath tube 3, so that the separation head 504 is completely separated from the inner wall of the sheath tube 3. Then, the separation head 504 is rotatably connected to the positioning ring 502 through the first rotating shaft 503, so that the separation head 504 rotates outward, and the outer wall of the separation head 504 contacts the valve to separate the valve.

[0036] Further, two groups of cutting heads 602 are located on the inner wall of the separation head 504. The lower end of the cutting head 602 is rotatably connected to the fixing member 601. The cutting piece 603 is a right triangle with the inclined surface facing upward. As Figure 3 shown, this structure is used to release the restraint on the cutting head 602 after the separation head 504 rotates outward, so that the cutting head 602 rotates outward through the fixing member 601, and controls the cutting piece 603 on the surface of the cutting head 602 to cut the diseased valve.

[0037] Further, an adjusting assembly 8 is provided at the upper end of the cutting piece 603. The adjusting assembly 8 includes a fixing hole 81, a fixing ring 82 and a traction rope 83. A fixing hole 81 is opened at the upper end of the cutting piece 603. A fixing ring 82 is connected in the fixing hole 81. The outer end of the fixing ring 82 is fixedly connected with a traction rope 83, and the traction rope 83 is connected to the adjusting ring 2. As Figure 5 shown, this structure is used to control the extension and shortening of the traction rope 83 through the adjusting ring 2, so as to control the rotation angle of the cutting head 602, which is convenient for adjustment according to the actual situation.

[0038] Further, positioning holes 9 are equidistantly opened on the outer surface of the separation head 504. The diameter of the positioning hole 9 is adapted to the cutting piece 603. As Figure 4 shown, this structure is used to store the cutting piece 603 at the cutting head 602 in the positioning hole 9 opened by the separation head 504 through the positioning hole 9 opened by the separation head 504, so as to make rational use of the space layout.

[0039] Further, a protective ring 10 is connected to the outer sides of the upper ends of the two groups of separation heads 504. The protective ring 10 has a certain toughness. As Figure 5 shown, this structure is used to make the protective ring 10 at the end of the separation head 504 contact the valve when the separation head 504 rotates outward through the setting of the protective ring 10, so as to avoid damaging the valve.

[0040] Further, two groups of sliders 75 are fixedly connected to the front and rear sides of the upper end of the movable rod 73. The sliders 75 are hemispherical. The diameter of the sliding groove 74 is adapted to the sliders 75. As Figure 4 shown, this structure is used to make the movable rod 73 move stably in the sliding groove 74 through the hemispherical sliders 75, so as to avoid the phenomenon of jamming.

[0041] Working principle: When in use, as Figure 1 shown, first deliver the sheath tube 3 to the designated position, and then control the guiding catheter 4 to push the connecting rod 501 to move along the inner wall of the sheath tube 3. As Figure 3 and Figure 4 shown, when the whole separation head 504 is separated from the inner wall of the sheath tube 3, it is rotationally connected to the positioning ring 502 through the first rotating shaft 503, so that the separation head 504 rotates outward. It is rotationally connected to the connecting block 71 through the movable rod 73, so that the other end of the movable rod 73 moves along the sliding groove 74 to guide the separation head 504. At this time, the protective ring 10 at the end of the separation head 504 first contacts the valve to avoid damaging the valve, so as to separate the valve. After the separation head 504 rotates outward, the restraint on the cutting head 602 is cancelled. As Figure 3 and Figure 5 shown, then control the extension and shortening of the traction rope 83 through the adjusting ring 2, so as to control the rotation angle of the cutting head 602, so that the cutting head 602 rotates outward through the fixing member 601, and control the cutting piece 603 on the surface of the cutting head 602 to cut the diseased valve. The cutting head 602 and the separation head 504 can be adjusted to the upper and lower sides of the valve, and then control the rotation angle of the cutting head 602 to make the cutting piece 603 stuck in the positioning hole 9, and firmly press the valve leaf between the cutting head 602 and the separation head 504 to determine that the position of the valve leaf is appropriate and achieve the treatment effect of regurgitation. The above is the whole working principle of the present invention.

[0042] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A tool for cutting and separating heart valves in transcatheter interventional surgery, comprising a control rod (1), an adjustment ring (2) and a sheath tube (3), characterized in that: An adjusting ring (2) is installed on the outer side of the control rod (1); a sheath tube (3) is connected to the upper end of the control rod (1); a guide catheter (4) is inserted into the sheath tube (3); a separation component (5) is provided at the end of the guide catheter (4); and a cutting component (6) is provided on the outer side of the guide catheter (4); The separation assembly (5) comprises a connecting rod (501), a positioning ring (502), a first rotating shaft (503) and a separation head (504); the end of the guide catheter (4) is provided with a connecting rod (501); a positioning ring (502) is provided on the outside of the connecting rod (501); two pairs of first rotating shafts (503) are provided inside the positioning ring (502); and a separation head (504) is provided on the outside of the first rotating shaft (503); The cutting assembly (6) comprises a fixing member (601), a cutting head (602) and a cutting blade (603); two groups of fixing members (601) are installed on the outer side of the connecting rod (501); a cutting head (602) is respectively arranged in the two groups of fixing members (601); and cutting blades (603) are equidistantly arranged on the outer surface of the cutting head (602); The separation component (5) and the cutting component (6) are used in conjunction with each other to form a capture head.

2. A heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: A stabilizing component (7) is provided at the bottom of the connecting rod (501), and the stabilizing component (7) includes a connecting block (71), a second rotating shaft (72), a movable rod (73) and a sliding groove (74). The bottom of the connecting rod (501) is fixedly connected to the connecting block (71), four groups of second rotating shafts (72) are rotatably connected inside the connecting block (71), and a movable rod (73) is fixedly connected between two groups of the second rotating shafts (72). A sliding groove (74) is provided inside the separation head (504), and the other end of the movable rod (73) is arranged in the sliding groove (74).

3. A heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: The upper end of the connecting rod (501) is connected to the end of the guiding catheter (4), the inner wall of the positioning ring (502) is fixedly connected to the surface of the connecting rod (501), the inner end of the first rotating shaft (503) is rotatably connected to the positioning ring (502), the other end of the first rotating shaft (503) is fixedly connected to the separation head (504), and the outer surface of the separation head (504) is adapted to the inner diameter of the sheath tube (3).

4. A heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: The two groups of cutting heads (602) are located on the inner wall of the separation head (504), the lower ends of the cutting heads (602) are rotatably connected to the fixing member (601), and the cutting blades (603) are right-angled triangles with the inclined surface facing upwards.

5. The heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: An adjustment component (8) is provided at the upper end of the cutting blade (603), and the adjustment component (8) comprises a fixing hole (81), a fixing ring (82) and a traction rope (83). The upper end of the cutting blade (603) is provided with a fixing hole (81), a fixing ring (82) is connected inside the fixing hole (81), a traction rope (83) is fixedly connected to the outer end of the fixing ring (82), and the traction rope (83) is connected to the adjustment ring (2).

6. A heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: The outer surface of the separation head (504) is provided with positioning holes (9) at equal intervals, and the diameter of the positioning holes (9) is adapted to the cutting blade (603).

7. A heart valve cutting and separation tool for transcatheter interventional surgery according to claim 1, characterized in that: The outer sides of the upper ends of the two groups of separation heads (504) are connected with protective rings (10), and the protective rings (10) have a certain toughness.

8. The heart valve cutting and separation tool for transcatheter interventional surgery according to claim 2, characterized in that: Two groups of sliding blocks (75) are fixedly connected to the front and rear sides of the upper end of the movable rod (73), and the diameter of the sliding groove (74) is adapted to the sliding block (75).

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