Heart valve rotary cutting device

Abstract

The invention discloses a heart valve rotary cutting device, and belongs to the technical field of medical instruments, the heart valve rotary cutting device comprises a column body, the bottom of the column body is provided with a mounting cavity, the inner wall of the mounting cavity is provided with a plurality of through grooves, and the inner walls of the through grooves are rotatably connected with bearing pieces through rotating shafts; a driving part used for driving the bearing pieces to turn over is arranged on the column body, the driving part drives the bearing pieces to turn over to a horizontal state so as to support the bioprosthetic valve, a cutter is connected to the column body in a sleeving mode, and the cutter rotates and moves downwards so that the bioprosthetic valve can be cut off from an implanted heart valve ring in a rotary mode. The whole process is simple and quick to operate and does not need limitation of operation experience.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a heart valve rotational cutting device. Background Art

[0002] Heart valves are one-way valves between the atria and ventricles or between the ventricles and arteries. Valvular heart disease is one of the most common cardiovascular diseases. With the aging of the population, the incidence of valvular disease is also gradually increasing. A considerable number of these valvular disease patients require valve replacement or repair surgery to improve heart function and quality of life. Currently, the commonly used valves are mechanical valves and biological valves. Although mechanical valves can be used for a long time, they require lifelong anticoagulation treatment. The performance of biological valves has been significantly improved by improving tissue processing methods and material selection, and the service life is usually around 10-15 years.

[0003] When replacing a damaged biological valve, since the biological valve has grown together with the surrounding tissue, an electric knife or scissors are needed to cut the valve from the surrounding tissue. However, the boundary between the biological valve and the surrounding tissue is not clear, and the surrounding tissue may be damaged during the operation, increasing the risk of heart rupture. Summary of the invention

[0004] The object of the present invention is to provide a heart valve rotational cutting device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heart valve rotational cutting device, comprising a column, a mounting cavity is opened at the bottom of the column, a plurality of through grooves are opened on the inner wall of the mounting cavity, the inner walls of the through grooves are connected with supporting plates by rotating through a rotating shaft, a driving member for driving the supporting plates to flip is arranged on the column, and the driving member drives the plurality of supporting plates to flip to a horizontal state so as to fix and support the biological valve, a cutter is sleeved on the column, and the damaged biological valve is rotationally cut off from the valve ring by rotating and moving the cutter downward.

[0006] Preferably, the driving member includes a driving column, which is socketed with the column body, and a plurality of connecting blocks 1 are arranged at the bottom end of the driving column. The connecting block 1 is rotatably connected to a connecting rod through a rotating shaft, and the end of the connecting rod is rotatably connected to a connecting block 2, and the plurality of connecting blocks 2 are respectively connected to a plurality of supporting plates.

[0007] Preferably, a pressure plate is provided at the top of the driving column, a connecting arm is provided on the pressure plate, a clamping block is provided at the end of the connecting arm, and two clamping grooves corresponding to the clamping block are provided at the top of the outer peripheral surface of the column, and the two clamping grooves are arranged up and down.

[0008] Preferably, a guide groove is formed at the bottom of the driving column, a guide column is provided in the guide groove, and an end of the guide column is connected to the inner wall of the installation cavity.

[0009] Preferably, a sleeve is sleeved on the column, and the outer peripheral surface of the sleeve is connected to two nuts via external threads, and the two nuts are used to fix the cutter.

[0010] Preferably, an annular mounting groove is provided in the column body, two push arms are sleeved on the column body, pressure plates 2 are provided at the top ends of the two push arms, the bottom ends of the two push arms extend into the annular mounting groove and are provided with connecting ring 1, the lower surface of the connecting ring 1 is slidably connected to two driving blocks through an annular slide rail, connecting columns are provided on the driving blocks, the ends of the connecting columns extend out of the column body and are connected to the sleeve, and the outer circumferential surface of the column body is provided with two spiral guide grooves corresponding to the connecting columns.

[0011] Preferably, a second connecting ring is provided below the two driving blocks, and a second spring is provided between the second connecting ring and the bottom wall of the annular mounting groove.

[0012] Preferably, a handle is provided on the column.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When performing a second heart valve replacement surgery, first select a cutter of the same size according to the size of the biological valve to be replaced (first implanted) and install it on the column. Then, pass the bottom of the column through the middle of the biological valve to be replaced. Then, drive the carrier sheet to flip under the action of the driving member, so that multiple carrier sheets flip into a horizontal state, pull the column upward to make the carrier sheet fit with the lower surface of the biological valve to be replaced, provide support for the biological valve to be replaced, and push and rotate the cutter downward to make the cutter perform rotary cutting on the biological valve to be replaced. The whole process is simple and quick to operate, and does not require any operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the driving member of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the carrier sheet of the present invention;

[0019] Figure 5 It is a partial structural split diagram of the present invention;

[0020] Figure 6 for Figure 5 A magnified view of the structure at center.

[0021] In the figure:

[0022] 1. Column; 2. Mounting cavity; 3. Through slot; 4. Load-bearing sheet; 5. Drive column; 6. Pressure plate 1; 7. Connecting arm; 8. Block; 9. Slot; 10. Guide slot; 11. Guide column; 12. Spring 1; 13. Connecting block 1; 14. Connecting rod; 15. Connecting block 2; 16. Annular mounting slot; 17. Sleeve; 18. Cutter; 19. External thread; 20. Nut; 21. Spiral guide slot; 22. Push arm; 23. Pressure plate 2; 24. Connecting ring 1; 25. Drive block; 26. Connecting ring 2; 27. Spring 2; 28. Handle; 29. ​​Connecting column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 6 , the present invention provides a technical solution:

[0025] like Figure 1 and Figure 2 As shown, a heart valve rotary cutting device comprises a column 1, a mounting cavity 2 is formed at the bottom of the column 1, a plurality of through grooves 3 are formed on the inner wall of the mounting cavity 2, the inner walls of the through grooves 3 are all connected with a carrier sheet 4 through a rotating shaft, a driving member for driving the carrier sheet 4 to flip is provided on the column 1, a cutter 18 is sleeved on the column 1, when performing a heart valve replacement operation, firstly, a cutter 18 of the same size is selected according to the size of the biological valve to be replaced and installed on the column 1, the bottom of the column 1 is passed through the middle of the biological valve to be replaced into the ventricle, and then the driving member is operated to rotate the column 1. The supporting sheet 4 is flipped by driving from below so that multiple supporting sheets 4 are flipped into a horizontal state, and the column 1 is pulled upward so that the supporting sheet 4 fits with the lower surface of the biological valve to be replaced, thereby providing support force for the biological valve to be replaced. The cutter 18 is pushed downward and rotated so that the cutter 18 performs rotational excision on the biological valve to be replaced. The medical staff recycles the device and resets the cutter 18 and the supporting sheet 4 at the same time, and recycles the cut biological valve to be replaced. The whole process is simple and quick to operate, and does not require any operating experience. A handle 28 is provided on the column 1.

[0026] like Figure 3 and Figure 4 As shown, the driving member includes a driving column 5, which is socketed with the column body 1, and a plurality of connecting blocks 13 are arranged at the bottom end of the driving column 5. The connecting block 13 is rotatably connected to the connecting rod 14 through a rotating shaft, and the end of the connecting rod 14 is rotatably connected to the connecting block 2 15. The plurality of connecting blocks 2 15 are respectively connected to the plurality of supporting sheets 4. The driving column 5 is controlled to drive the plurality of connecting blocks 13 to move downward, and the supporting sheet 4 begins to flip over with the cooperation of the connecting rod 14 and the connecting block 2 15 until the supporting sheet 4 is in a horizontal state, so as to support the biological valve to be replaced. It should be noted that there is a protrusion on the supporting sheet 4. When the supporting sheet 4 is in a horizontal state, the protrusion is against the column body 1 to limit the position of the supporting sheet 4, and the flipping angle of the supporting sheet 4 is 0-90°.

[0027] Furthermore, a pressure plate 6 is provided at the top of the driving column 5, a connecting arm 7 is provided on the pressure plate 6, a block 8 is provided at the end of the connecting arm 7, and two card slots 9 corresponding to the block 8 are provided at the top of the outer peripheral surface of the column 1, and the two card slots 9 are arranged up and down. In order to better support the biological valve and reduce the cumbersomeness of the operation, when the pressure plate 6 is squeezed and the carrier sheet 4 is moved to the specified position, the block 8 on the connecting arm 7 moves to the card slot 9 below, thereby supporting the carrier sheet 4. The driving column 5 is fixed in position, a guide groove 10 is provided at the bottom of the driving column 5, and a guide column 11 is provided in the guide groove 10. The end of the guide column 11 is connected to the inner wall of the installation cavity 2, and a spring 12 is provided between the bottom end of the driving column 5 and the bottom wall of the installation cavity 2. When the rotary cutting work of the required replacement biological valve is completed, the pressure plate 6 is pulled upward to separate the block 8 from the lower slot 9, and then the pressure plate 6 is quickly reset under the action of the spring 12, and the block 8 moves to the upper slot 9 at this time.

[0028] like Figure 5 As shown, a sleeve 17 is sleeved on the column 1, and the outer peripheral surface of the sleeve 17 is connected to two nuts 20 through an external thread 19. The two nuts 20 are used to fix the cutter 18. When the cutter 18 is replaced, the nut 20 located at the top is rotated to separate it from the sleeve 17, and then a cutter 18 of a suitable size is selected to be sleeved on the sleeve 17, and then the nut 20 is rotated until the cutter 18 is fixed. The initial position of the cutter 18 on the sleeve 17 is adjusted by rotating the nut 20 located at the bottom, so as to avoid the phenomenon that the cutter 18 causes damage to the tissue around the biological valve due to excessive extension when the biological valve to be replaced is cut.

[0029] like Figure 6As shown, an annular mounting groove 16 is provided in the column 1, two push arms 22 are sleeved on the column 1, and a pressure plate 23 is provided at the top of the two push arms 22. The bottom ends of the two push arms 22 extend into the annular mounting groove 16 and are provided with a connecting ring 1 24. The lower surface of the connecting ring 1 24 is slidably connected to two driving blocks 25 through an annular slide rail. The driving blocks 25 are provided with connecting columns 29. The ends of the connecting columns 29 extend out of the column 1 and are connected to the sleeve 17. The outer peripheral surface of the column 1 is provided with two spiral guide grooves 21 corresponding to the connecting columns 29. The lower part of the two driving blocks 25 is provided with a connecting column 29. There is a connecting ring 26, and a spring 27 is arranged between the connecting ring 26 and the bottom wall of the annular mounting groove 16. After the supporting sheet 4 is in contact with the lower surface of the biological valve, the medical staff pushes the pressure plate 23 to move downward, and the push arm 22 pushes the connecting ring 1 24 and the driving block 25 to start moving downward. Under the action of the spiral guide groove 21, the connecting column 29 can drive the sleeve 17 to start rotating, and the sleeve 17 drives the cutter 18 to start rotating and moving downward. Under the elastic force of the spring 27, the cutter 18 can be quickly reset by releasing the pressure plate 23 after completing the cutting work of the biological valve.

[0030] The working process of this embodiment is as follows: when performing a second heart valve replacement operation, first, according to the size of the biological valve to be replaced (first implanted), a cutter 18 of the same size is selected and installed between the two nuts 20 on the column 1. Then, the medical staff puts the index finger and middle finger on the handle 28, and the thumb is buckled on the pressure plate 1 6, and the bottom of the column 1 passes through the middle of the biological valve to be replaced into the ventricle of the heart. Then, under the action of the driving member, the carrier sheet 4 is driven to flip, so that multiple carrier sheets 4 are flipped into a horizontal state, and then the column 1 is pulled up to make the carrier sheet 4 fit with the lower surface of the biological valve. At this time, the block 8 on the connecting arm 7 moves to the lower slot 9, and then the thumb pushes the pressure plate 2 23. Under the action of the spiral guide groove 21, the connecting column 29 can drive the sleeve 17 to start rotating and move downward to perform rotary cutting on the biological valve to avoid damage to the tissue around the biological valve. After the rotary cutting is completed, the pressure plate 1 6 is pulled upward to reset the carrier sheet 4, and then the device is taken out of the patient's body and the rotary cut biological valve is recovered.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heart valve rotary cutting device, comprising a column (1), characterized in that: The bottom of the column (1) is provided with an installation cavity (2), the inner wall of the installation cavity (2) is provided with a plurality of through grooves (3), the inner walls of the through grooves (3) are rotatably connected to a carrier sheet (4) via a rotating shaft, the column (1) is provided with a driving member for driving the carrier sheet (4) to flip, the driving member drives the plurality of carrier sheets (4) to flip to a horizontal state so as to fix and support the biological valve, the column (1) is sleeved with a cutter (18), and the biological valve is cut off from the implanted heart valve ring by rotating and moving the cutter (18) downward.

2. A heart valve rotary cutting device according to claim 1, characterized in that: The driving member comprises a driving column (5), wherein the driving column (5) is sleeved with the column body (1), and a plurality of connecting blocks (13) are arranged at the bottom end of the driving column (5), wherein the connecting block (13) is rotatably connected to a connecting rod (14) via a rotating shaft, and the end of the connecting rod (14) is rotatably connected to a connecting block (15), and the plurality of connecting blocks (15) are respectively connected to a plurality of supporting sheets (4).

3. A heart valve rotary cutting device according to claim 2, characterized in that: A pressure plate (6) is arranged at the top of the driving column (5), a connecting arm (7) is arranged on the pressure plate (6), a clamping block (8) is arranged at the end of the connecting arm (7), and two clamping grooves (9) corresponding to the clamping block (8) are arranged at the top of the outer peripheral surface of the column (1), and the two clamping grooves (9) are arranged up and down.

4. A heart valve rotary cutting device according to claim 2, characterized in that: A guide groove (10) is provided at the bottom of the driving column (5), and a guide column (11) is provided in the guide groove (10), and the end of the guide column (11) is connected to the inner wall of the installation cavity (2).

5. A heart valve rotary cutting device according to claim 1, characterized in that: A sleeve (17) is sleeved on the column (1), and the outer peripheral surface of the sleeve (17) is connected to two nuts (20) via an external thread (19). The two nuts (20) are used to fix the cutter (18).

6. A heart valve rotary cutting device according to claim 5, characterized in that: An annular mounting groove (16) is provided in the column (1), and two push arms (22) are sleeved on the column (1). The top ends of the two push arms (22) are provided with a pressure plate 2 (23). The bottom ends of the two push arms (22) extend into the annular mounting groove (16) and are provided with a connecting ring 1 (24). The lower surface of the connecting ring 1 (24) is slidably connected to two driving blocks (25) through an annular slide rail. The driving blocks (25) are each provided with a connecting column (29). The end of the connecting column (29) extends out of the column (1) and is connected to the sleeve (17). The outer peripheral surface of the column (1) is provided with two spiral guide grooves (21) corresponding to the connecting columns (29).

7. The heart valve rotational cutting device according to claim 1, characterized in that: A second connecting ring (26) is provided below the two driving blocks (25), and a second spring (27) is provided between the second connecting ring (26) and the bottom wall of the annular mounting groove (16).

8. The heart valve rotational cutting device according to claim 1, characterized in that: The column (1) is provided with a handle (28).

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