LTD driving system, pulse power device and steep pulse ablatograph
By standardizing the coil winding method and unifying the relative position settings, the problem of unstable steep pulse high voltage output in LTD technology was solved, achieving stable pulse voltage output and improving the treatment effect of solid tumors.
Patent Information
- Application Number
- CN202423303421.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In existing pulsed power devices based on LTD technology, the amplitude of steep pulse high voltage output is unstable, and the time deviation of the rising and falling edges is large, which affects the treatment effect of solid tumors.
By adopting standardized coil winding methods and uniform relative position settings, it is ensured that the primary coils of each level of transformer are located on the same horizontal line, and the secondary coils are located on the same horizontal line. Synchronous pulse energization of each level of transformer is achieved through a synchronous triggering module, forming a stable steep pulse output.
It achieves stable amplitude of steep pulses with small time deviations between rising and falling edges, thus improving the treatment effect of solid tumors.
Smart Images
Figure CN223828322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steep pulse electric field ablation technology, and in particular to an LTD driving system, a pulse power device, and a steep pulse ablation instrument. Background Technology
[0002] Linear Transformer Driver (LTD) technology is a relatively new pulsed power technology capable of generating high-power pulsed currents or voltages, and is widely used in the field of pulsed power technology. Currently, pulsed power devices based on LTD technology have received widespread attention and development in the field of Irreversible Electroporation (IRE). IRE generates high-intensity, short-duration electrical pulses (i.e., steep pulses) in tumor tissue, causing irreversible opening of the cell membrane and resulting in cell ablation, thereby achieving the treatment of solid tumors. However, in existing technologies, pulsed power devices based on LTD technology may experience problems such as unstable amplitude of the steep pulse high-voltage output and large deviations in the rise and fall times due to the non-standard winding method of the transformer coil in the internal drive module, thus affecting the treatment effect of solid tumors. Utility Model Content
[0003] This invention provides an LTD driving system, a pulse power device, and a steep pulse ablation device to solve the problems of unstable high voltage output amplitude and large time deviations of rise and fall edges in existing pulse power devices. The technical solution provided by this invention is as follows:
[0004] On one hand, this utility model provides an LTD drive system, including a synchronous trigger module and at least two drive modules, and each drive module includes a transformer and an energy storage unit connected to the primary side of the transformer; each energy storage unit is connected to the synchronous trigger module; the secondary sides of each transformer are connected in series to form a series branch, and the two ends of the series branch form steep pulse output terminals; wherein, the magnetic cores of each transformer are arranged at equal intervals, and the primary side of each transformer is formed by winding wires of the same length on its magnetic core in the same winding manner to form the primary side coil of each transformer, and the secondary side of each transformer is formed by connecting the same wire through the magnetic core of each transformer to form the secondary side coil of each transformer; the primary side coils of each transformer are located on the same horizontal line, and the secondary side coils of each transformer are located on the same horizontal line.
[0005] Optionally, the primary side of each transformer uses wires of the same length, wound on its core with the same number of turns, winding order and winding direction, and the two output ends are wound together with the same number of turns, winding order and winding direction to form the primary side coil of each transformer.
[0006] Optionally, the two outgoing ends are twisted together in the same number of turns, in the same order and direction to form a braid.
[0007] Optionally, the angle between the secondary coil and the primary coil of each transformer relative to the origin of the magnetic core is a set value.
[0008] Optional, the setting value can be any value between 0 degrees and 180 degrees.
[0009] Optionally, when the number of secondary windings of the transformer is at least two, the angles between each secondary winding and the primary winding relative to the origin of the magnetic core may be the same or different.
[0010] On the other hand, this utility model provides a pulse power device, including a control system and the aforementioned LTD drive system. The control system is connected to the synchronization trigger module in the LTD drive system. The control system is used to control the synchronization trigger module to trigger each drive module to output electrical pulses synchronously.
[0011] Optionally, the pulse power device provided by this utility model further includes a shielding and isolation system; the shielding and isolation system is located outside the control system and the LTD drive system and is connected to the control system; the shielding and isolation system is used to shield and isolate electromagnetic interference generated during the output of electrical pulses under the control of the control system.
[0012] Optionally, the pulse power device provided by this utility model further includes a cooling system; the cooling system is disposed around the LTD drive system and connected to the control system; the cooling system is used to dissipate heat from the LTD drive system under the control of the control system.
[0013] On the other hand, this utility model provides a steep pulse ablation device, including the aforementioned pulse power device.
[0014] The beneficial effects of this utility model are as follows:
[0015] In the LTD drive system, pulse power device, and steep pulse ablation device provided by this utility model, the magnetic cores of each transformer are arranged at equal intervals. The primary side of each transformer is formed by winding wires of the same length around its magnetic core in the same winding manner to form the primary side coil of each transformer. The secondary side of each transformer is formed by connecting the same wire in series through the magnetic core of each transformer to form the secondary side coil of each transformer. The primary side coils of each transformer are located on the same horizontal line, and the secondary side coils of each transformer are located on the same horizontal line. This achieves a standardized coil winding method and a unified relative position setting for each transformer. Furthermore, through the standardized coil winding method and the unified relative position setting, when the primary side coils of each level of transformer are synchronously pulse-energized, a pulse magnetic field is synchronously generated in the magnetic core. Finally, a pulse voltage is synchronously induced in the secondary side coils of each level of transformer. This results in a stable amplitude of the steep pulse after the pulse voltages induced by each level of transformer are superimposed, with small time deviations in the rise and fall edges, thereby improving the treatment effect of solid tumors.
[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and drawings. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this invention, are illustrative and descriptive of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:
[0018] Figure 1 This is a schematic diagram of the composition structure of an LTD drive system in an embodiment of this utility model;
[0019] Figure 2 This is a schematic diagram of the linear structure of the primary and secondary sides of the multi-stage transformer in an embodiment of this utility model;
[0020] Figure 3 This is a front view of the primary winding structure of the multi-stage transformer in this embodiment of the present invention;
[0021] Figure 4 This is a side view of the primary winding structure of a multi-stage transformer in an embodiment of this utility model;
[0022] Figure 5 This is a front view of the primary winding structure of the transformer in this embodiment of the present invention;
[0023] Figure 6 This is a side view of the primary winding structure of the transformer in this embodiment of the present invention;
[0024] Figure 7 This is a front view of the winding structure of the multi-stage transformer in this embodiment of the invention, when the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 90 degrees.
[0025] Figure 8 This is a side view of the winding structure of the multi-stage transformer in this embodiment of the invention, when the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 90 degrees.
[0026] Figure 9 This is a front view of the winding structure of the multi-stage transformer in this embodiment of the invention when the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 45 degrees.
[0027] Figure 10 This is a side view of the winding structure of the multi-stage transformer in this embodiment of the invention, where the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 45 degrees.
[0028] Figure 11 This is a front view of the winding structure of the multi-stage transformer in this embodiment of the invention when the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 0 degrees.
[0029] Figure 12 This is a side view of the winding structure of the multi-stage transformer in this embodiment of the invention when the angle between the secondary coil and the primary coil relative to the origin of the magnetic core is 0 degrees.
[0030] Figure 13 This is a front view of the winding structure of a multi-stage transformer in this embodiment of the invention when the included angles between the secondary coils and the primary coils relative to the origin of the magnetic core are different.
[0031] Figure 14 This is a left-side view of the winding structure of a multi-stage transformer in this embodiment of the invention when the included angles between the secondary coils and the primary coils relative to the origin of the magnetic core are different.
[0032] Figure 15 This is a right-side view of the winding structure of a multi-stage transformer in this embodiment of the invention when the included angles between the secondary coils and the primary coils relative to the origin of the magnetic core are different.
[0033] Figure 16 This is a schematic diagram of another component structure of the LTD drive system in an embodiment of this utility model. Detailed Implementation
[0034] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] This utility model embodiment provides an LTD drive system, see reference. Figure 1 As shown, the LTD drive system includes a synchronous trigger module 100 and at least two drive modules 200, and each drive module 200 includes a transformer T and an energy storage unit ES connected to the primary side of the transformer T; each energy storage unit ES is connected to the synchronous trigger module 100; the secondary sides of each transformer T are connected in series to form a series branch, and the two ends of the series branch form steep pulse output terminals; wherein, see reference Figure 2 As shown, the magnetic cores of each transformer T are arranged at equal intervals 11. The primary side of each transformer T is formed by winding wires of the same length around its magnetic core in the same winding manner to form the primary side coil 12 of each transformer T. The secondary side of each transformer T is formed by connecting the same wire in series through the magnetic core of each transformer T to form the secondary side coil 13 of each transformer T. The primary side coils of each transformer T are located on the same horizontal line 14, and the secondary side coils of each transformer T are located on the same horizontal line 15.
[0036] In this embodiment of the invention, the magnetic cores of each transformer are arranged at equal intervals. The primary side of each transformer is formed by winding wires of the same length around its magnetic core in the same winding manner. The secondary side of each transformer is formed by connecting the same wires in series through the magnetic core of each transformer to form the secondary side coils of each transformer. The primary side coils of each transformer are located on the same horizontal line, and the secondary side coils of each transformer are located on the same horizontal line. This achieves a standardized coil winding method and a unified relative position setting for each transformer. Furthermore, through the standardized coil winding method and the unified relative position setting, when the primary coils of each level of transformer are synchronously pulsed and energized, a pulsed magnetic field is synchronously generated in the magnetic core. Finally, a pulse voltage is synchronously induced in the secondary coils of each level of transformer. This results in a stable amplitude of the steep pulse after the pulse voltages induced by each level of transformer are superimposed, with small time deviations in the rising and falling edges, thereby improving the treatment effect of solid tumors.
[0037] In one possible implementation, see [reference] Figure 3 and Figure 4As shown, the primary side of each transformer uses wires of the same length, wound on its magnetic core with the same number of turns, winding order and winding direction. The two output ends are then wound together with the same number of turns, winding order and winding direction to form the primary side coil of each transformer. The two output ends are wound together in a twisted shape with the same number of turns, winding order and winding direction.
[0038] In practice, the primary side conductors of each transformer must be of equal length. (Refer to...) Figure 5 and Figure 6 As shown, for each transformer, its primary side conductor 1 is folded in half and wound around any annular position of its magnetic core 2 at least once (the number of turns can be flexibly selected according to design requirements). The two excess leads of the primary side conductor 1 are twisted into a braid shape 3, so that the primary side conductor 1 hugs and adheres tightly to the magnetic core 2 to the maximum extent. The other n-1 transformers are wound in the same way. The number of turns, winding order, and winding direction of the two excess leads of the primary side conductor 1 of each transformer must be consistent. It is worth mentioning that the winding method of the two excess leads of the primary side conductor 1 of each transformer can be the same, and it is not limited to winding into a braid shape. For example, it can also be wound into a straight line shape, etc.
[0039] In one possible implementation, the angle between the secondary coil and the primary coil of each transformer relative to the origin of the magnetic core is a set value; wherein the set value is any value between 0 degrees and 180 degrees.
[0040] In practice, the angle between the secondary and primary windings of each transformer and the origin of the magnetic core can be any value between 0 and 180 degrees. For example, see [reference needed]. Figure 7 and Figure 8 As shown, the angle between the secondary and primary coils of each transformer and the origin of the magnetic core is 90 degrees. (See also...) Figure 9 and Figure 10 As shown, the angle between the secondary and primary coils of each transformer and the origin of the magnetic core is 45 degrees. For example, see [reference needed]. Figure 11 and Figure 12 As shown, the angle between the secondary coil and the primary coil of each transformer relative to the origin of the magnetic core is 0 degrees.
[0041] In one possible implementation, when the number of secondary windings of the transformer is at least two, the angles between each secondary winding and the primary winding relative to the origin of the magnetic core may be the same or different.
[0042] In practical implementation, the number of secondary windings of the transformer can be flexibly set according to different turns ratios. When the number of secondary windings of the transformer is at least two, the angles between each secondary winding and the primary winding relative to the origin of the magnetic core may be the same or different. For example, see [reference needed]. Figures 13-15As shown, the angles between each secondary coil and the primary coil relative to the origin of the magnetic core are all different.
[0043] In one possible implementation, see [reference] Figure 16 As shown, the synchronous trigger module 100 includes a trigger switch, and the energy storage unit ES in each drive module 200 includes an energy storage switch, an energy storage capacitor, and a diode. The charging process of the energy storage capacitors is as follows: the trigger switch K0 is closed, and the energy storage switches K1, K2, ..., Kn are opened. The DC source voltages HVDC+ and HVDC- charge the energy storage capacitors C1, C2, ..., Cn synchronously in parallel through the trigger switch K0 and the diode circuit D1, D2, ..., Dn. The discharging process of the energy storage capacitors is as follows: the trigger switch K0 is opened, and the energy storage switches K1, K2, ..., Kn are closed synchronously. The energy storage capacitors C1, C2, ..., Cn discharge synchronously through their respective energy storage switches K1, K2, ..., Kn to the primary coils of each stage transformer T1, T2, ..., Tn. The high voltage generation process is as follows: the synchronous pulse energization of the primary coils of each stage transformer T1, T2, ..., Tn will generate a pulse magnetic field in each stage magnetic core, causing the secondary coils of each stage transformer to induce a pulse voltage corresponding to the primary coil. Since the secondary coils of each stage transformer are connected in series, n-stage superimposed induced high voltage pulse outputs are finally generated at the two output line terminals (i.e., steep pulse output terminals). During this process, due to the standardized coil winding method and unified relative position setting of each transformer, when the primary coil of each level of transformer is synchronously pulsed and energized, a pulsed magnetic field is synchronously generated in the magnetic core. Finally, a pulse voltage is synchronously induced in the secondary coil of each level of transformer. This results in a stable amplitude of the steep pulse after the pulse voltages induced by each level of transformer are superimposed, with small deviations in the rising and falling edges, thereby improving the treatment effect of solid tumors.
[0044] On the other hand, this utility model embodiment provides a pulse power device, including a control system and the above-mentioned LTD drive system. The control system is connected to the synchronization trigger module in the LTD drive system. The control system is used to control the synchronization trigger module to trigger each drive module to output electrical pulses synchronously.
[0045] In one possible implementation, the pulse power device provided in this embodiment of the present invention further includes a shielding and isolation system; the shielding and isolation system is disposed outside the triggering system and the LTD drive system and is connected to the control system; the shielding and isolation system is used to shield and isolate electromagnetic interference generated during the output of electrical pulses under the control of the control system.
[0046] In practice, shielding and isolation systems can be implemented in various structures. For example, a shielding and isolation system includes a shielding cover to reduce electromagnetic interference and protect operators and equipment.
[0047] In one possible implementation, the pulse power device provided in this embodiment of the present invention further includes a cooling system; the cooling system is disposed around the LTD drive system and connected to the control system; the cooling system is used to dissipate heat from the LTD drive system under the control of the control system.
[0048] In practice, cooling systems can be implemented in various structures. For example, cooling systems include air-cooled systems, which dissipate heat through fans.
[0049] On the other hand, this utility model embodiment provides a steep pulse ablation device, including the above-mentioned pulse power device.
[0050] In summary, in the LTD drive system, pulse power device, and steep pulse ablation device provided by this utility model embodiment, the magnetic cores of each transformer are arranged at equal intervals. The primary side of each transformer is formed by winding wires of the same length around its magnetic core in the same winding manner to form the primary side coil of each transformer. The secondary side of each transformer is formed by connecting the same wire in series through the magnetic core of each transformer to form the secondary side coil of each transformer. The primary side coils of each transformer are located on the same horizontal line, and the secondary side coils of each transformer are located on the same horizontal line. This achieves a standardized coil winding method and a unified relative position setting for each transformer. Furthermore, through the standardized coil winding method and the unified relative position setting, when the primary side coils of each level of transformer are synchronously pulse-energized, a pulse magnetic field is synchronously generated in the magnetic core. Finally, a pulse voltage is synchronously induced in the secondary side coils of each level of transformer. This results in a stable amplitude of the steep pulse after the pulse voltages induced by each level of transformer are superimposed, with small time deviations in the rising and falling edges, thereby improving the treatment effect of solid tumors.
[0051] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0052] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.
Claims
1. An LTD drive system, characterized in that, The system includes a synchronous triggering module and at least two drive modules, each drive module including a transformer and an energy storage unit connected to the primary side of the transformer; each energy storage unit is connected to the synchronous triggering module; the secondary sides of each transformer are connected in series to form a series branch, and the two ends of the series branch form steep pulse output terminals; wherein, the magnetic cores of each transformer are arranged at equal intervals, and the primary side of each transformer is formed by winding wires of the same length on its magnetic core in the same winding manner to form the primary side coil of each transformer, and the secondary side of each transformer is formed by connecting the same wire through the magnetic core of each transformer to form the secondary side coil of each transformer; the primary side coils of each transformer are located on the same horizontal line, and the secondary side coils of each transformer are located on the same horizontal line.
2. The LTD drive system as described in claim 1, characterized in that, Each of the transformers uses wires of the same length, wound around its core with the same number of turns, winding order, and winding direction. The two output ends are then wound together with the same number of turns, winding order, and winding direction to form the primary coil of each transformer.
3. The LTD drive system as described in claim 2, characterized in that, The two outlet ends are twisted together in the same number of turns, in the same order and in the same direction to form a braid.
4. The LTD drive system according to any one of claims 1-3, characterized in that, The angle between the secondary coil and the primary coil of each transformer relative to the origin of the magnetic core is a set value.
5. The LTD drive system as described in claim 4, characterized in that, The set value is any value between 0 degrees and 180 degrees.
6. The LTD drive system as described in claim 4, characterized in that, When the number of secondary windings of the transformer is at least two, the angles between each secondary winding and the primary winding relative to the origin of the magnetic core may be the same or different.
7. A pulsed power device, characterized in that, The system includes a control system and an LTD drive system as described in any one of claims 1-6, wherein the control system is connected to the synchronization trigger module in the LTD drive system; the control system is used to control the synchronization trigger module to trigger each of the drive modules to synchronously output electrical pulses.
8. The pulse power device as described in claim 7, characterized in that, It also includes a shielding and isolation system; the shielding and isolation system is located outside the control system and the LTD drive system and is connected to the control system; the shielding and isolation system is used to shield and isolate electromagnetic interference generated during the electrical pulse output process under the control of the control system.
9. The pulse power device as described in claim 7, characterized in that, It also includes a cooling system; the cooling system is disposed around the LTD drive system and connected to the control system; the cooling system is used to dissipate heat from the LTD drive system under the control of the control system.
10. A steep pulse ablation device, characterized in that, Includes the pulse power device as described in any one of claims 7-9.