Prosthetic heart valve loading tool and loading system thereof

Abstract

The utility model relates to an artificial heart valve loading tool and a loading system thereof. The artificial heart valve loading tool comprises a loading tool body and a cooling assembly, the loading tool body is provided with a loading channel penetrating through the loading tool body; the loading channel is of a gradually-shrinking structure and is used for compressing and bundling the artificial heart valve; the cooling assembly is arranged on the loading tool body and used for cooling the heart valve prosthesis. According to the artificial heart valve loading tool, based on the arrangement of the cooling assembly, in the valve pressing and loading process of self-expanding valve loading, the valve is cooled, the valve is made to be at the low temperature all the time, the valve loading resistance is reduced, then the valve can be pressed and held into a subsequent conveying system more evenly, and the valve loading efficiency is improved. And the valve is prevented from wrinkling in the loading process to influence use.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments for cardiac intervention, in particular to an artificial heart valve loading tool and a loading system thereof. Background Art

[0002] Heart valve disease includes lesions in the mitral valve, tricuspid valve, aortic valve and pulmonary valve, which affect the normal flow of blood, thus causing abnormal heart function, causing pain to patients, and even endangering their lives. At present, one of the treatments for valvular regurgitation is transcatheter valve replacement. Transcatheter valve replacement is a new minimally invasive valve treatment method that uses a valve delivery system to deliver the valve to the native valve to replace the function of the native valve. Before the valve is implanted in the human body, it needs to be pre-pressed and then loaded into the delivery system. For self-expanding valves, the current problem is that the valve is difficult to press and load, because during the process of valve pressing and loading, it is difficult to keep the valve in ice water to keep it in a low-temperature softened state. After the valve is out of the low-temperature environment, it will cause the temperature to rise and harden, which will lead to excessive resistance to valve pressing and loading, increase the difficulty of valve installation, and even cause wrinkles after the valve is loaded. The above problems need to be solved urgently. Utility Model Content

[0003] The utility model discloses an artificial heart valve loading tool, aiming to solve the technical problems existing in the prior art.

[0004] The utility model adopts the following technical solutions:

[0005] On the one hand, the utility model provides an artificial heart valve loading tool, which includes a loading tool body and a cooling assembly; the loading tool body is provided with a loading channel that passes through the loading tool body; the loading channel is a tapered structure and is used to compress and converge the artificial heart valve; the cooling assembly is arranged on the loading tool body and is used to cool the artificial heart valve.

[0006] In the artificial heart valve loading tool of the utility model, the loading channel is a cone channel.

[0007] In the artificial heart valve loading tool of the utility model, the loading tool body is a conical shell.

[0008] In the artificial heart valve loading tool of the present invention, the cooling component is located in the loading tool body, and the thermal conductivity of the loading tool body located inside the cooling component is greater than the thermal conductivity of the loading tool body outside the cooling component.

[0009] In the artificial heart valve loading tool of the present invention, the loading tool body is a double-layer structure, including an inner layer and an outer layer; the cooling component is arranged between the inner layer and the outer layer, and the thermal conductivity of the inner layer material is greater than the thermal conductivity of the outer layer material.

[0010] In the artificial heart valve loading tool of the present invention, the cooling component is a cooling pipe and / or a refrigeration element.

[0011] In the artificial heart valve loading tool of the utility model, the cooling element is a semiconductor cooling sheet.

[0012] In the artificial heart valve loading tool of the present invention, the cooling component is a spiral structure wound around the outside of the loading channel.

[0013] In the artificial heart valve loading tool of the present invention, the cooling assembly is installed in a mounting groove on the loading tool body.

[0014] In the artificial heart valve loading tool of the present invention, the cooling component is a cooling pipe, and there are multiple cooling pipes, which are connected or not connected to each other.

[0015] In the artificial heart valve loading tool of the utility model, the artificial heart valve loading tool also includes a refrigeration system; the refrigeration system is used to provide cold energy to the cooling component.

[0016] In the artificial heart valve loading tool of the utility model, the cooling component is a cooling pipe; the refrigeration system includes a cooling device and a delivery pump; the cooling device delivers cooling medium to the cooling component through the delivery pump, and cools down the cooling medium after being cooled and heated.

[0017] In the artificial heart valve loading tool of the utility model, the surface of the loading tool body is provided with an anti-slip structure.

[0018] In the artificial heart valve loading tool of the utility model, the anti-slip structure is an anti-slip groove.

[0019] In the artificial heart valve loading tool of the utility model, the anti-slip grooves are evenly distributed along the circumference of the loading tool body.

[0020] In a second aspect, the utility model provides a heart valve loading system, which includes the above-mentioned artificial heart valve loading tool.

[0021] The technical solution adopted by the present invention can achieve the following beneficial effects: the artificial heart valve loading tool of the present invention is based on the setting of the cooling component. During the process of pressing and loading the self-expanding valve, the valve is cooled down so that it is always at a lower temperature, reducing the resistance to valve loading, thereby allowing the valve to be pressed and gripped more evenly into the subsequent delivery system, avoiding wrinkles on the valve during loading that affect its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for the description of the embodiment, which constitute a part of the utility model. The schematic embodiment of the utility model and its description explain the utility model and do not constitute an improper limitation of the utility model. In the drawings:

[0023] Figure 1 This is one of the structural schematic diagrams of the artificial heart valve loading tool of the utility model;

[0024] Figure 2 This is one of the structural schematic diagrams of the loading tool body of the artificial heart valve loading tool of the utility model (set as a double-layer structure);

[0025] Figure 3 One of the structures of the cooling assembly of the artificial heart valve loading tool of the utility model (helical arrangement);

[0026] Figure 4 It is a structural schematic diagram of a loading tool body of an artificial heart valve loading tool of the utility model (with a mounting groove and an anti-slip structure);

[0027] Figure 5 This is the second structural schematic diagram of the artificial heart valve loading tool of the utility model (provided with a refrigeration system);

[0028] Figure 6 The second structure of the cooling assembly of the artificial heart valve loading tool of the utility model (providing multiple cooling pipes);

[0029] Figure 7 It is a structural schematic diagram of the heart valve loading system of the utility model.

[0030] Description of reference numerals:

[0031] 1. Loading tool body; 11. Loading channel; 12. Inner layer; 13. Outer layer; 14. Mounting groove; 2. Cooling component; 3. Refrigeration system; 31. Cooling device; 32. Delivery pump; 4. Anti-slip structure. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. In the description of the utility model, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a magnetic connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the field of interventional medical device technology, the direction close to the operator is generally defined as the proximal end, and the direction away from the operator is defined as the distal end. The direction of the central axis of an object such as a cylinder or a tube is defined as the axial direction. The radial direction refers to the direction passing through the central axis in the radial plane, for example, the straight line direction along the diameter or radius, or the straight line direction perpendicular to the central axis.

[0035] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In order to solve the problems existing in the prior art, the present application provides an artificial heart valve loading tool, such as Figure 1 As shown, it includes a loading tool body 1 and a cooling component 2; the loading tool body 1 is provided with a loading channel 11 which passes through the loading tool body 1; the loading channel 11 is a tapered structure and is used to compress and converge the artificial heart valve, and the loading channel 11 can be optionally a conical channel, with the bottom as an inlet and the top as an outlet. Based on the conical channel, the artificial heart valve is gradually compressed and converged, and during the compression process, the conical loading channel 11 has a higher fit with the artificial heart valve, so that the cooling effect of the cooling component 2 on the artificial heart valve is better; preferably, the loading tool body 1 can be set as a conical shell; the cooling component 2 is set in the loading tool body 1, and is used to cool the artificial heart valve.

[0037] The artificial heart valve loading tool of the utility model is based on the setting of the cooling component. During the process of pressing, gripping and loading the self-expanding valve, the valve is cooled down so that it is always at a relatively low temperature (i.e., lower than the Mf temperature of the memory alloy. The material of the artificial heart valve is the memory alloy, which is hard austenite above the Af temperature and forms easily deformable martensite when cooled to below the Mf temperature), thereby reducing the resistance to valve loading, thereby allowing the valve to be pressed and gripped more evenly into the subsequent delivery system, and avoiding wrinkles in the valve during the loading process that affect its use.

[0038] In some embodiments, Figure 2 As shown, the cooling component 2 is located inside the loading tool body 1, and the thermal conductivity of the loading tool body 1 located on the inner side of the cooling component 2 is greater than the thermal conductivity of the loading tool body 1 located on the outer side of the cooling component 2. The loading tool bodies 1 on both sides of the cooling component 2 have different thermal conductivity systems. The high thermal conductivity of the inner side is beneficial to improving the heat conduction between the cooling component 2 and the artificial heart valve, thereby improving the cooling speed of the artificial heart valve; while the low thermal conductivity of the outer side is beneficial to reducing the heat dissipation of the cooling component 2 to the outside, reducing the loss of cold, and improving the utilization rate of heat, while avoiding frostbite of the operator's hands due to the low temperature of the loading tool body 1 during operation.

[0039] Specifically, the loading tool body 1 is a double-layer structure, including an inner layer 12 and an outer layer 13; a cooling component 2 is arranged between the inner layer 12 and the outer layer 13, the thermal conductivity of the material of the inner layer 12 is greater than the thermal conductivity of the material of the outer layer 13, the material of the inner layer 12 can be selected from metals such as copper and aluminum; the material of the outer layer 13 can be selected from polymer materials such as PC and ABS; in this scheme, the cooling component can be arranged as an annular cavity surrounded by the inner layer 12 and the outer layer 13, and an inlet and outlet connected to the annular cavity are arranged on the loading tool body 1, the cooling component 2 can also be a cooling pipe and / or a refrigeration element, and the setting position of the inlet and outlet can be specifically adjusted according to different cooling components.

[0040] In some embodiments, the cooling component 2 is a cooling pipe and / or a cooling element (such as a semiconductor cooling sheet); either a cooling pipe or a cooling element can be provided separately, or both can be provided, and the specific selection can be made according to the needs. When the cooling pipe is used, a cooling medium needs to be introduced, and the cooling medium can be cooling water, liquid nitrogen, etc., and the specific selection can be made according to the cooling temperature required.

[0041] In some embodiments, Figure 3 As shown, the cooling component 2 is a spiral structure wound around the outside of the loading channel 11; based on the cooling component being arranged in a spiral shape, the heat transfer area is increased, thereby improving the cooling speed of the artificial heart valve and the cooling uniformity.

[0042] In some embodiments, Figure 4 As shown, the cooling assembly 2 is installed in the installation groove 14 on the loading tool body 1, so as to avoid frostbite of the operator's hands due to low temperature during operation.

[0043] In some embodiments, the cooling component 2 is a cooling pipe, and the number of cooling pipes is multiple, and the multiple cooling pipes are connected or not connected; the heat exchange area is increased based on the provision of multiple cooling pipes, and the heat exchange efficiency is improved; Figure 6 As shown, multiple cooling pipes can be interconnected to form a pipe network, with a single inlet and outlet connected to the cooling medium; multiple cooling pipes can also be partially connected, interconnected and individually set with their own inlets and outlets connected to the cooling medium; multiple cooling pipes can also be independent of each other and each connected to the cooling medium; the specific selection can be made according to needs; and when multiple cooling pipes are set, the flow direction of the cooling medium in each cooling pipe and the flow rate of the cooling medium in each pipe can be adjusted to control the cooling rate of the artificial heart valve.

[0044] In some embodiments, Figure 5 As shown, the artificial heart valve loading tool also includes a refrigeration system 3; the refrigeration system 3 is used to provide cold energy to the cooling component 2.

[0045] When the cooling component 2 is a cooling pipe; the refrigeration system 3 includes a cooling device 31 and a delivery pump 32; the cooling device 31 delivers the cooling medium to the cooling component 2 through the delivery pump 32, and cools down the cooling medium after being cooled and heated; wherein the cooling device 31 can be selected as a tubular or plate heat exchanger (external cooling medium is required) or a refrigerator.

[0046] When the cooling component 2 is selected as a semiconductor refrigeration chip, the refrigeration system is a power supply device that provides electrical energy to the semiconductor refrigeration chip.

[0047] In some embodiments, Figure 4 As shown, the surface of the loading tool body 1 is provided with an anti-skid structure 4 to increase the friction when holding the loading tool body 1 and facilitate valve loading. Specifically, the anti-skid structure 4 is an anti-skid groove, and preferably the anti-skid grooves are evenly distributed along the circumference of the loading tool body 1.

[0048] A heart valve loading system, such as Figure 7As shown, it includes the above-mentioned artificial heart valve loading tool. Exemplarily, the heart valve loading system includes an artificial heart valve loading tool A, a handheld crimping machine B and a valve delivery device C, and the artificial heart valve D is smoothly crimped into the valve delivery device C by the artificial heart valve loading tool A and the handheld crimping machine B. First, the handheld crimping machine B and the valve loading tool A are inserted from the distal end of the valve delivery device C in sequence, then the artificial heart valve D is fixed on the valve delivery device C, and then the heart valve loading tool A is pushed to the distal end so that the heart valve loading tool A is sleeved outside the artificial heart valve D, and the heart valve loading tool A is continued to be pushed to evenly compress the artificial heart valve D, and then the handheld crimping machine B is used to crimp the part of the artificial heart valve D exposed at the proximal outer side of the valve loading tool A, so that the artificial heart valve D is gradually crimped into the valve delivery device C. Finally, after the artificial heart valve D is completely crimped into the valve delivery device C, the loading tool A and the handheld crimping machine B are removed, wherein the handheld crimping machine B and the valve delivery device C can adopt existing devices.

[0049] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. An artificial heart valve loading tool, characterized in that: It comprises a loading tool body (1) and a cooling assembly (2); The loading tool body (1) is provided with a loading channel (11) penetrating the loading tool body (1); The loading channel (11) is a tapered structure, used for compressing and constricting the artificial heart valve; The cooling component (2) is arranged on the loading tool body (1) and is used for cooling the artificial heart valve.

2. The artificial heart valve loading tool according to claim 1, characterized in that: The cooling component (2) is located inside the loading tool body (1), and the thermal conductivity of the loading tool body (1) located inside the cooling component (2) is greater than the thermal conductivity of the loading tool body (1) outside the cooling component (2).

3. The artificial heart valve loading tool according to claim 2, characterized in that: The loading tool body (1) is a double-layer structure, comprising an inner layer (12) and an outer layer (13); The cooling component (2) is arranged between the inner layer (12) and the outer layer (13), and the thermal conductivity of the material of the inner layer (12) is greater than the thermal conductivity of the material of the outer layer (13).

4. The artificial heart valve loading tool according to claim 1, characterized in that: The cooling component (2) is a cooling pipe and / or a refrigeration element.

5. The artificial heart valve loading tool according to claim 4, characterized in that: The refrigeration element is a semiconductor refrigeration sheet.

6. The artificial heart valve loading tool according to claim 1, characterized in that: The cooling component (2) is a spiral structure wound around the outside of the loading channel (11).

7. The artificial heart valve loading tool according to claim 1, characterized in that: The cooling assembly (2) is installed in a mounting groove (14) on the loading tool body (1).

8. The artificial heart valve loading tool according to claim 1, characterized in that: The cooling component (2) is a cooling pipe, and there are multiple cooling pipes in number. The multiple cooling pipes are connected or not connected.

9. The artificial heart valve loading tool according to claim 1, characterized in that: The artificial heart valve loading tool also includes a refrigeration system (3); The refrigeration system (3) is used to provide cold energy to the cooling component (2).

10. The artificial heart valve loading tool according to claim 9, characterized in that: The cooling component (2) is a cooling pipe; The refrigeration system (3) comprises a cooling device (31) and a delivery pump (32); The cooling device (31) delivers cooling medium to the cooling component (2) via the delivery pump (32), and cools down the cooling medium after the temperature is increased.

11. The artificial heart valve loading tool according to claim 1, characterized in that: The surface of the loading tool body (1) is provided with an anti-slip structure (4).

12. A heart valve loading system, characterized in that: A prosthetic heart valve loading tool comprising any one of claims 1-11.

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