Shock wave balloon catheter device

Abstract

The embodiment of the invention provides a shock wave balloon catheter device. The shock wave balloon catheter device comprises a balloon capable of being filled with liquid. The electrode pair is positioned in the balloon; the divider resistor is connected in series with the electrode pair; the first branch is connected with the divider resistor in parallel; a voltage detector; a circuit breaker; when the circuit breaker enables the first branch to be in a closed state and applies voltage to the electrode pair, the electrode pair generates discharge shock waves in the liquid of the balloon; when the circuit breaker enables the first branch circuit to be in an open circuit state and applies voltage to the electrode pair, the voltage of the electrode pair is lowered to be incapable of generating discharge shock waves in the liquid of the balloon under the voltage dividing effect of the voltage dividing resistor; the voltage detector detects the voltage at the two ends of the divider resistor; when the voltage detection value is within the voltage value preset range, judging that the balloon is in a normal state; when the voltage detection value is out of the voltage value preset range, it is judged that the balloon leaks. According to the embodiment, additional detection equipment does not need to be arranged at the balloon intervened in the human body; and no discharge arc is generated when the balloon is detected to be broken.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a shock wave balloon catheter device. Background Art

[0002] As heart disease patients age and the disease progresses, plaques in peripheral blood vessels and coronary arteries gradually calcify. This bone-like structure can cause narrowing of the vessels, reduce blood flow in the vessels, and may eventually lead to complete occlusion of the vessels.

[0003] A shock wave balloon catheter device is provided for vascular calcification lesions; during treatment, the balloon on the catheter is pushed into the vascular calcification area; the balloon is then inflated and pressurized with liquid; high-voltage pulses are applied to the electrode pairs in the balloon, causing the electrode pairs to discharge and generate shock waves in the liquid; the shock waves hit the balloon wall, causing the calcified plaque to rupture; after the calcified plaque ruptures, the balloon can be further inflated to open the blood vessel.

[0004] During interventional treatment, the balloon may rupture unexpectedly; for example, when the blood vessels are severely diffusely calcified, the balloon is easily punctured by the calcified part; the balloon itself has quality problems; or the balloon ruptures due to the doctor's operating error. If the balloon ruptures during the treatment process, if it is not discovered in time, it may affect the treatment effect and may even cause further harm to the patient. Therefore, there is an urgent need for a shock wave balloon catheter device that can quickly feedback balloon rupture during treatment. Summary of the invention

[0005] An embodiment of the present application provides a shock wave balloon catheter device that can quickly detect balloon rupture information during treatment.

[0006] In one embodiment of the present application, a shock wave balloon catheter device is provided, comprising:

[0007] A balloon; the balloon can be filled with liquid;

[0008] An electrode pair; the electrode pair is located in the balloon; when a voltage is applied to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon;

[0009] A voltage-dividing resistor; the voltage-dividing resistor is connected in series with the electrode pair;

[0010] A first branch; the first branch is connected in series with the electrode pair, and the first branch is connected in parallel with the voltage-dividing resistor;

[0011] A voltage detector; the voltage detector is used to detect the voltage across the voltage-dividing resistor;

[0012] Circuit breaker; the circuit breaker is used to make the first branch have two states: open and disconnected;

[0013] When the circuit breaker makes the first branch circuit in a connected state and applies voltage to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon;

[0014] When the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the voltage dividing effect of the voltage dividing resistor makes the voltage of the electrode pair so low that a discharge shock wave cannot be generated in the liquid of the balloon.

[0015] In another embodiment of the present application, another shock wave balloon catheter device is provided, comprising

[0016] A balloon; the balloon can be filled with liquid;

[0017] An electrode pair; the electrode pair is located in the balloon; when a voltage is applied to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon;

[0018] A voltage-dividing resistor; the voltage-dividing resistor is connected in series with the electrode pair;

[0019] A first branch; the first branch is connected in series with the electrode pair, and the first branch is connected in parallel with the voltage-dividing resistor;

[0020] A current detector; the current detector is used to detect the current passing through the voltage dividing resistor;

[0021] Circuit breaker; the circuit breaker is used to make the first branch have two states: open and disconnected;

[0022] When the circuit breaker makes the first branch circuit in a connected state and applies voltage to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon;

[0023] When the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the voltage dividing effect of the voltage dividing resistor makes the voltage of the electrode pair so low that a discharge shock wave cannot be generated in the liquid of the balloon.

[0024] In an embodiment of the present application, when the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the voltage dividing effect of the voltage dividing resistor causes the voltage of the electrode pair to be so low that a discharge shock wave cannot be generated in the liquid of the balloon, and the voltage detector detects the voltage across the voltage dividing resistor, and then compares the voltage detection value with a preset voltage value range; when the voltage detection value is within the preset voltage value range, the balloon is judged to be in a normal state; when the voltage detection value is outside the preset voltage value range, the balloon is judged to be leaking. It can be seen that this embodiment can achieve the purpose of detecting balloon rupture without setting additional equipment at the balloon that intervenes in the human body; and when detecting balloon rupture, no large current or discharge arc will be generated, which is safer for the patient and reduces the loss of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A schematic structural diagram of a balloon catheter device provided in the first embodiment of the present application;

[0027] Figure 2 A schematic diagram of another system of a balloon catheter device provided in the first embodiment of the present application;

[0028] Figure 3 A system schematic diagram of another balloon catheter device provided in the first embodiment of the present application;

[0029] Figure 4 A schematic structural diagram of a balloon catheter device provided in a second embodiment of the present application;

[0030] Figure 5 A schematic diagram of a balloon catheter device provided in accordance with a third embodiment of the present application;

[0031] Figure 6 A schematic structural diagram of a balloon catheter device provided in a fourth embodiment of the present application;

[0032] Figure 7 A schematic diagram of another system of a balloon catheter device provided in accordance with a fourth embodiment of the present application;

[0033] Figure 8 A system schematic diagram of another balloon catheter device provided in the fourth embodiment of the present application;

[0034] Fig. 9 A schematic structural diagram of a balloon catheter device provided in a fifth embodiment of the present application;

[0035] Fig.10 A schematic diagram of another system of a balloon catheter device provided in accordance with a fifth embodiment of the present application;

[0036] Fig.11 A system schematic diagram of another balloon catheter device provided in the fifth embodiment of the present application; DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined by the present application.

[0038] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element in the middle. The "proximal end" in this application refers to the side close to the operator, and the "distal end" refers to the side away from the operator.

[0039] The following will be combined Figures 1 to 11 The shock wave balloon catheter device of the embodiment of this specification is explained and described. It should be noted that in the embodiment of the present invention, the same reference numerals represent the same components. For the sake of brevity, the detailed description of the same components is omitted in different embodiments, and the descriptions of the same components can be referenced and quoted to each other.

[0040] As heart disease patients age and the disease progresses, plaques in peripheral blood vessels and coronary arteries gradually calcify. This bone-like structure can cause narrowing of the vessels, reduce blood flow in the vessels, and may eventually lead to complete occlusion of the vessels.

[0041] A shock wave balloon catheter device is provided for vascular calcification lesions; during treatment, the balloon on the catheter is pushed into the vascular calcification area; the balloon is then inflated and pressurized with liquid; high-voltage pulses are applied to the electrode pairs in the balloon, causing the electrode pairs to discharge and generate shock waves in the liquid; the shock waves hit the balloon wall, causing the calcified plaque to rupture; after the calcified plaque ruptures, the balloon can be further inflated to open the blood vessel.

[0042] During interventional treatment, the balloon may rupture unexpectedly; for example, when the blood vessels are severely diffusely calcified, the balloon is easily punctured by the calcified part; the balloon itself has quality problems; or the balloon ruptures due to the doctor's operating error. If the balloon ruptures during the treatment process, if it is not discovered in time, it may affect the treatment effect and may even cause further harm to the patient. Therefore, there is an urgent need for a shock wave balloon catheter device that can quickly feedback balloon rupture during treatment.

[0043] In an optional embodiment, the shock wave balloon catheter device further comprises an inner test electrode and an outer test electrode; the inner test electrode is located inside the balloon and can contact the liquid inside the balloon; the outer test electrode is located outside the balloon and can be electrically connected to the patient's blood.

[0044] Under normal conditions, the inner test electrode and the outer test electrode are insulated and blocked by the balloon; when the balloon ruptures, the liquid in the balloon communicates with the blood to form a conductive path, so the conductive state parameters between the inner test electrode and the outer test electrode will change; by monitoring the conductive state parameters between the inner test electrode and the outer test electrode, balloon rupture information during treatment can be quickly detected. However, in this embodiment, in addition to the electrode pair for generating a discharge arc, an inner test electrode is also required in the balloon, which increases the size of the balloon and increases the difficulty and cost of manufacturing.

[0045] In one embodiment of the present application, Figures 1 to 3 As shown, a shock wave balloon catheter device is provided, comprising a balloon 101; the balloon 101 can be filled with liquid;

[0046] Electrode pair 102; the electrode pair 102 is located inside the balloon 101;

[0047] A power supply 103; the power supply 103 is used to provide a voltage to the electrode pair 102; the power supply 103 is configured to switchably output a discharge voltage and a test voltage; when the power supply 103 outputs the discharge voltage, the electrode pair 102 generates a discharge arc in the liquid of the balloon 101;

[0048] The current detector 104 is connected in series with the electrode pair 102 . When the power supply 103 outputs a test voltage, the current detector 104 is used to detect the current in the circuit, and the test voltage is so low that the electrode pair 102 does not generate a discharge arc.

[0049] Among them, the discharge voltage is a pulse voltage, and the discharge voltage should be large enough to enable the electrode pair 102 to generate a discharge arc in the liquid of the balloon 101, for example, the discharge voltage may be 3000V; and the test voltage is so low that the electrode pair 102 does not generate a discharge arc, for example, the test voltage may be 100V, so that no discharge arc is generated when testing whether the balloon 101 is leaking.

[0050] When the balloon 101 is intact, the power supply 103 outputs the test voltage, and the conductivity between the electrode pair 102 in the balloon 101 is poor; when the balloon 101 ruptures, blood will enter the balloon 101, making the conductivity between the electrode pair 102 better. Based on this, in this embodiment, the power supply 103 is configured to switch the output discharge voltage and the test voltage. When the power supply 103 outputs the test voltage, the current detector 104 detects the current in the circuit, and then compares the current detection value with the current value preset range; when the current detection value is within the current value preset range, it is judged that the balloon 101 is in a normal state; when the current detection value is outside the current value preset range, it is judged that the balloon 101 is leaking. The current value preset range is obtained based on the current detection value detected by the current detector 104 when the balloon 101 is in a normal state and the power supply 103 outputs the test voltage; the current value preset range can be obtained through multiple experiments before the product is sold and used. It can be seen that this embodiment can achieve the purpose of detecting the rupture of the balloon 101 without setting up additional equipment at the balloon 101 inserted into the human body; and no large current and discharge arc will be generated when detecting the rupture of the balloon 101, which is safer for the patient and reduces the loss of the device.

[0051] In this embodiment, the timing for applying the test voltage may be before the first application of the discharge voltage after the balloon 101 is inserted into the lesion site; or it may be after the discharge voltage has been applied a certain number of times.

[0052] Furthermore, the power supply 103 includes a current limiting resistor 1031; the current detector 104 is connected in series with the current limiting resistor 1031, such as Figure 2 As shown; or, the current detector 104 is connected in parallel with the current limiting resistor 1031, as shown Figure 1 shown.

[0053] exist Figure 1In the optional embodiment shown, the device includes a first circuit breaker 105; the current detector 104 and the first circuit breaker 105 are connected in series to form a first branch; the first branch is connected in parallel with the current limiting resistor 1031; when the power supply 103 outputs a test voltage, the first circuit breaker 105 makes the first branch in a closed state; when the power supply 103 outputs a discharge voltage, the first circuit breaker 105 makes the first branch in a closed state. When the power supply 103 outputs a test voltage, the first circuit breaker 105 makes the first branch in a closed state, and the current detector 104 detects the current in the circuit. At this time, the current in the loop can be as low as 100mA, and the range of the current detector 104 can be configured accordingly. When the power supply 103 outputs a discharge voltage, the discharge current in the loop is relatively large, which may reach more than 100A, so the first circuit breaker 105 makes the first branch in a closed state, so that the range of the current detector 104 does not need to adapt to the discharge current.

[0054] exist Figure 3 In another optional embodiment shown, the device includes a second branch and a second circuit breaker 106; the second branch is connected in parallel with the current detector 104; when the power supply 103 outputs a test voltage, the second circuit breaker 106 makes the branch where the current detector 104 is located in a closed state, and makes the second branch in a closed state; when the power supply 103 outputs a discharge voltage, the second circuit breaker 106 makes the second branch in a closed state, and makes the branch where the current detector 104 is located in a closed state.

[0055] Optionally, the second branch is a section of wire or a resistor is provided on the second branch. When the power supply 103 outputs a test voltage, the second circuit breaker 106 makes the branch where the current detector 104 is located in a connected state, and makes the second branch in an open circuit state. The current detector 104 detects the current in the circuit. At this time, the current in the loop can be as low as 100mA. The range of the current detector 104 can be configured accordingly. When the power supply 103 outputs a discharge voltage, the discharge current in the loop is relatively large, which may reach more than 100A. Therefore, the second circuit breaker 106 makes the second branch in a connected state, and makes the branch where the current detector 104 is located in an open circuit state, so that the range of the current detector 104 does not need to adapt to the discharge current.

[0056] Optionally, the device of this embodiment also includes a controller; the controller is configured to receive a current detection value of the current detector 104 when the power supply 103 outputs a test voltage, and compare the current detection value with a preset range of current values; when the current detection value is within the preset range of current values, it is judged that the balloon 101 is in a normal state; when the current detection value is outside the preset range of current values, it is judged that the balloon 101 is leaking; after judging that the balloon 101 is leaking, the controller can also stop the power supply 103, or send an alarm signal.

[0057] Optionally, the current detector 104 in this embodiment is a current detection resistor. The current detection resistor has a very low resistance rating and a high power rating. By measuring the voltage drop (V) across the current detection resistor, using Ohm's law (I=V / R), we can calculate the amount of current flowing through the circuit, where V is the voltage drop across the shunt resistor, I is the current flow rate, and R is the current detection resistor value. From the above, it can be seen that this embodiment can also measure the voltage value of the current detection resistor and determine whether the balloon 101 is leaking by the voltage value. When the power supply 103 outputs a test voltage, the voltage across the current detection resistor is measured, and then the voltage detection value is compared with the preset range of the voltage value; when the voltage detection value is within the preset range of the voltage value, it is determined that the balloon 101 is in a normal state; when the voltage detection value is outside the preset range of the voltage value, it is determined that the balloon 101 is leaking. This implementation scheme is also within the scope of protection of the present application.

[0058] In another embodiment of the present application, another shock wave balloon catheter device is provided, such as Figure 4 Shown, including

[0059] Balloon 201; the balloon 201 may be filled with liquid;

[0060] Electrode pair 202; the electrode pair 202 is located in the balloon 201;

[0061] A power supply 203; the power supply 203 is used to provide a voltage to the electrode pair 202; the power supply 203 is configured to switchably output a discharge voltage and a test voltage; when the power supply 203 outputs a discharge voltage, the electrode pair 202 generates a discharge arc in the liquid of the balloon 201;

[0062] A test resistor; the test resistor is connected in series with the electrode pair 202; optionally, the test resistor is a current limiting resistor 2031 of the power supply 203;

[0063] A voltage detector 204; the voltage detector 204 is connected in parallel with the test resistor; when the power supply 203 outputs a test voltage, the voltage detector 204 is used to detect the voltage across the test resistor, and the test voltage is so low that the electrode pair 202 does not generate a discharge arc.

[0064] When the balloon 201 is intact, the power supply 203 outputs the test voltage, and the conductivity between the electrode pair 202 in the balloon 201 is poor; when the balloon 201 ruptures, blood will enter the balloon 201, making the conductivity between the electrode pair 202 better. Based on this, in this embodiment, the power supply 203 is configured to switch the output discharge voltage and the test voltage. When the power supply 203 outputs the test voltage, the voltage detector 204 is used to detect the voltage across the test resistor, and then compare the voltage detection value with the preset voltage value range; when the voltage detection value is within the preset voltage value range, it is judged that the balloon 201 is in a normal state; when the voltage detection value is outside the preset voltage value range, it is judged that the balloon 201 is leaking. The preset voltage value range is obtained based on the voltage detection value detected by the voltage detector 204 when the balloon 201 is in a normal state and the power supply 203 outputs the test voltage; the preset voltage value range can be obtained through multiple experiments before the product is sold and used. It can be seen that this embodiment can achieve the purpose of detecting the rupture of the balloon 201 without setting up additional equipment at the balloon 201 inserted into the human body; and when detecting the rupture of the balloon 201, no high voltage and discharge arc will be generated, which is safer for the patient and reduces the loss of the device.

[0065] In this embodiment, the timing for applying the test voltage may be before the first application of the discharge voltage after the balloon 201 is inserted into the lesion site; or after the discharge voltage has been applied a certain number of times.

[0066] In the third embodiment of the present application, a third shock wave balloon catheter device is provided, such as Figure 5 Shown, including

[0067] Balloon 301; the balloon 301 may be filled with liquid;

[0068] Electrode pair 302; the electrode pair 302 is located in the balloon 301; when a voltage is applied to the electrode pair 302, the electrode pair 302 generates a discharge shock wave in the liquid of the balloon 301;

[0069] A power supply 303; the power supply 303 is used to provide voltage to the electrode pair 302;

[0070] Impedance detector 304 ; the impedance detector 304 is connected between the electrode pair 302 , and is used to measure the impedance between the electrode pair 302 when the power supply 303 does not provide voltage to the electrode pair 302 .

[0071] The power supply 303 provides a pulse voltage to the electrode pair 302. The impedance detector 304 measures the impedance between the electrode pair 302 at a time that can be after the balloon 301 is inserted into the lesion site and before the voltage is applied for the first time; or it can be the time between two pulse voltages.

[0072] When the balloon 301 is intact, the impedance between the electrode pair 302 in the balloon 301 is high; when the balloon 301 ruptures, blood will enter the balloon 301, making the impedance between the electrode pair 302 lower. Based on this, in this embodiment, when the power supply 303 does not provide voltage to the electrode pair 302, the impedance detector 304 measures the impedance between the electrode pair 302, and then compares the impedance detection value with the preset range of impedance values; when the impedance detection value is within the preset range of impedance values, it is judged that the balloon 301 is in a normal state; when the impedance detection value is outside the preset range of impedance values, it is judged that the balloon 301 is leaking. The preset range of impedance values ​​is obtained based on the impedance detection value detected by the impedance detector 304 when the balloon 301 is in a normal state and the power supply 303 does not provide voltage to the electrode pair 302; the preset range of impedance values ​​can be obtained through multiple experiments before the product is sold and used. It can be seen that this embodiment does not need to set additional equipment at the balloon 301 to achieve the purpose of detecting the rupture of the balloon 301.

[0073] Optionally, the device further includes a controller; when the power supply 303 does not provide voltage to the electrode pair 302, the controller is configured to receive the impedance detection value of the impedance detector 304 and compare the impedance detection value with a preset impedance value range; when the impedance detection value is within the preset impedance value range, it is determined that the balloon 301 is in a normal state; when the impedance detection value is outside the preset impedance value range, it is determined that the balloon 301 is leaking. After determining that the balloon 301 is leaking, the controller can also stop the power supply 303 or send an alarm signal.

[0074] In the fourth embodiment of the present application, a fourth shock wave balloon catheter device is provided, such as Figures 6 to 8 Shown, including

[0075] Balloon 401; the balloon 401 may be filled with liquid;

[0076] Electrode pair 402; the electrode pair 402 is located in the balloon 401; when a voltage is applied to the electrode pair 402, the electrode pair 402 generates a discharge shock wave in the liquid of the balloon 401;

[0077] A voltage-dividing resistor 406; the voltage-dividing resistor 406 is connected in series with the electrode pair 402;

[0078] The first branch is connected in series with the electrode pair 402, and the first branch is connected in parallel with the voltage dividing resistor 406;

[0079] Voltage detector 404; the voltage detector 404 is used to detect the voltage across the voltage-dividing resistor 406;

[0080] Circuit breaker 405; the circuit breaker 405 is used to make the first branch have two states: open and disconnected;

[0081] When the circuit breaker 405 makes the first branch circuit open and applies voltage to the electrode pair 402, the electrode pair 402 generates a discharge shock wave in the liquid of the balloon 401;

[0082] When the circuit breaker 405 puts the first branch in an open-circuit state and applies voltage to the electrode pair 402, the voltage-dividing effect of the voltage-dividing resistor 406 makes the voltage of the electrode pair 402 so low that a discharge shock wave cannot be generated in the liquid of the balloon 401; for example, the resistance value of the voltage-dividing resistor 406 can be selected to be above 10 kΩ.

[0083] When the balloon 401 is intact, the impedance between the electrode pair 402 in the balloon 401 is high; when the balloon 401 ruptures, blood will enter the balloon 401, making the impedance between the electrode pair 402 lower. Based on this, in this embodiment, when the circuit breaker 405 makes the first branch circuit in an open circuit state, and a voltage is applied to the electrode pair 402, the voltage dividing effect of the voltage dividing resistor 406 makes the voltage of the electrode pair 402 so low that it cannot generate a discharge shock wave in the liquid of the balloon 401, and the voltage detector 404 detects the voltage across the voltage dividing resistor 406, and then compares the voltage detection value with the preset voltage value range; when the voltage detection value is within the preset voltage value range, it is judged that the balloon 401 is in a normal state; when the voltage detection value is outside the preset voltage value range, it is judged that the balloon 401 is leaking. The preset voltage value range is obtained based on the voltage detection value detected by the voltage detector 404 when the balloon 401 is in a normal state and the circuit breaker 405 makes the first branch circuit in an open circuit state; the preset voltage value range can be obtained through multiple experiments before the product is sold and used. It can be seen that this embodiment can achieve the purpose of detecting the rupture of the balloon 401 without setting additional equipment at the balloon 401 that intervenes in the human body; and when detecting the rupture of the balloon 401, no large current and discharge arc will be generated, which is safer for the patient and reduces the loss of the device.

[0084] Obviously, after the voltage detector 404 detects the voltage across the voltage-dividing resistor 406, the current passing through the voltage-dividing resistor 406 can be calculated; then the current detection value is compared with the preset current value range; when the current detection value is within the preset current value range, it is determined that the balloon 401 is in a normal state; when the current detection value is outside the preset current value range, it is determined that the balloon 401 is leaking. The preset current value range is calculated based on the voltage detection value detected by the voltage detector 404 when the balloon 401 is in a normal state and the circuit breaker 405 makes the first branch in an open circuit state; the preset current value range can be obtained through multiple experiments before the product is sold and used. The above method also belongs to the protection scope of this application.

[0085] In this embodiment, it can be selected that when any pulse voltage is applied, the circuit breaker 405 puts the first branch into an open circuit state.

[0086] Optional, such as Figure 7 As shown, the first branch is a section of wire.

[0087] Alternatively, a resistor is provided on the first branch. For example, the device further comprises a power supply 403; the power supply 403 is used to provide a voltage to the electrode pair 402; the power supply 403 comprises a current limiting resistor 4031; the current limiting resistor 4031 is provided on the first branch, such as Figure 6 shown.

[0088] Optionally, the branch where the voltage-dividing resistor 406 is located can always remain in a connected state, such as Figure 8 As shown; Alternatively, when the circuit breaker 405 makes the first branch in a connected state, the circuit breaker 405 is also used to make the branch where the voltage-dividing resistor 406 is located in an open circuit state, such as Figure 8 shown.

[0089] Optionally, the voltage detector 404 includes a first voltage collector and a second voltage collector; the first voltage collector is arranged on one side of the voltage-dividing resistor 406 , and the second voltage collector is arranged on the other side of the voltage-dividing resistor 406 .

[0090] Optionally, this embodiment further includes a controller; when the circuit breaker 405 makes the first branch circuit in an open circuit state and applies voltage to the electrode pair 402, the controller is configured to receive the voltage detection value of the voltage detector 404 and compare the voltage detection value with a preset voltage value range; when the voltage detection value is within the preset voltage value range, it is determined that the balloon 401 is in a normal state; when the voltage detection value is outside the preset voltage value range, it is determined that the balloon 401 is leaking; the preset voltage value range is obtained based on the voltage detection value detected by the voltage detector 404 when the balloon 401 is in a normal state, the first branch circuit is in an open circuit state, and a voltage is applied to the electrode pair 402. After determining that the balloon 401 is leaking, the controller can also stop the power supply 403 or send an alarm signal.

[0091] The present application also provides a fifth embodiment of the shock wave balloon catheter device, such as Figures 9 to 11 As shown, it includes a balloon 501; the balloon 501 can be filled with liquid;

[0092] Electrode pair 502; the electrode pair 502 is located in the balloon 501; when a voltage is applied to the electrode pair 502, the electrode pair 502 generates a discharge shock wave in the liquid of the balloon 501;

[0093] A voltage-dividing resistor 506; the voltage-dividing resistor 506 is connected in series with the electrode pair 502;

[0094] The first branch is connected in series with the electrode pair 502, and the first branch is connected in parallel with the voltage-dividing resistor 506;

[0095] A current detector 504; the current detector 504 is used to detect the current passing through the voltage dividing resistor 506;

[0096] Circuit breaker 505; the circuit breaker 505 is used to make the first branch have two states: open and disconnected;

[0097] When the circuit breaker 505 makes the first branch circuit open and applies voltage to the electrode pair 502, the electrode pair 502 generates a discharge shock wave in the liquid of the balloon 501;

[0098] When the circuit breaker 505 puts the first branch in an open circuit state and applies voltage to the electrode pair 502 , the voltage dividing effect of the voltage dividing resistor 506 makes the voltage of the electrode pair 502 so low that a discharge shock wave cannot be generated in the liquid of the balloon 501 .

[0099] When the balloon 501 is intact, the impedance between the electrode pair 502 in the balloon 501 is high; when the balloon 501 ruptures, blood will enter the balloon 501, making the impedance between the electrode pair 502 lower. Based on this, in this embodiment, when the circuit breaker 505 makes the first branch circuit in an open circuit state, and applies current to the electrode pair 502, the voltage dividing effect of the voltage dividing resistor 506 makes the current of the electrode pair 502 so low that it cannot generate a discharge shock wave in the liquid of the balloon 501, and the current detector 504 detects the current at both ends of the voltage dividing resistor 506, and then compares the current detection value with the current value preset range; when the current detection value is within the current value preset range, it is judged that the balloon 501 is in a normal state; when the current detection value is outside the current value preset range, it is judged that the balloon 501 is leaking. The preset current value range is obtained based on the current detection value detected by the current detector 504 when the balloon 501 is in a normal state and the circuit breaker 505 makes the first branch in a circuit-breaking state; the preset current value range can be obtained through multiple experiments before the product is sold and used. It can be seen that this embodiment can achieve the purpose of detecting the rupture of the balloon 501 without setting additional equipment at the balloon 501 that intervenes in the human body; and when detecting the rupture of the balloon 501, no large current and discharge arc will be generated, which is safer for the patient and reduces the loss of the device.

[0100] In this embodiment, it can be selected that when any pulse voltage is applied, the circuit breaker 505 puts the first branch into an open circuit state.

[0101] Optional, such as Fig.10 As shown, the first branch is a section of wire.

[0102] Alternatively, a resistor is provided on the first branch. For example, the device further comprises a power supply 503; the power supply 503 is used to provide a voltage to the electrode pair 502; the power supply 503 comprises a current limiting resistor 5031; the current limiting resistor 5031 is provided on the first branch, such as Fig. 9 shown.

[0103] Optionally, the branch where the voltage-dividing resistor 506 is located can always remain in a connected state, such as Fig.11 Alternatively, when the circuit breaker 505 causes the first branch to be in a connected state, the circuit breaker 505 is also used to cause the branch where the voltage-dividing resistor 506 is located to be in an open circuit state, such as Fig.10 shown.

[0104] Optionally, this embodiment further includes a controller; when the circuit breaker 505 makes the first branch circuit in an open circuit state and applies current to the electrode pair 502, the controller is configured to receive the current detection value of the current detector 504 and compare the current detection value with a preset current value range; when the current detection value is within the preset current value range, it is determined that the balloon 501 is in a normal state; when the current detection value is outside the preset current value range, it is determined that the balloon 501 is leaking; the preset current value range is obtained based on the current detection value detected by the current detector 504 when the balloon 501 is in a normal state, the first branch circuit is in an open circuit state, and current is applied to the electrode pair 502. After determining that the balloon 501 is leaking, the controller can also stop the power supply 503 or send an alarm signal.

[0105] It should be noted that, in the description of this specification, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this specification, unless otherwise specified, the meaning of "plurality" is two or more.

[0106] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable people familiar with the technology to understand the content of the present application and implement it accordingly, and they cannot be used to limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit of the present application should be included in the protection scope of the present application.

[0107] It should be understood that the above description is for illustration and not for limitation. By reading the above description, many embodiments and many applications beyond the provided examples will be apparent to those skilled in the art. For comprehensive purposes, all articles and references, including the disclosures of patent applications and announcements, are incorporated herein by reference.

Claims

1. A shock wave balloon catheter device, comprising A balloon; the balloon can be filled with liquid; An electrode pair; the electrode pair is located in the balloon; when a voltage is applied to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon; Features: The device also includes A voltage-dividing resistor; the voltage-dividing resistor is connected in series with the electrode pair; A first branch; the first branch is connected in series with the electrode pair, and the first branch is connected in parallel with the voltage-dividing resistor; A voltage detector; the voltage detector is used to detect the voltage across the voltage-dividing resistor; Circuit breaker; the circuit breaker is used to make the first branch have two states: open and disconnected; When the circuit breaker makes the first branch circuit in a connected state and applies voltage to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon; When the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the voltage dividing effect of the voltage dividing resistor makes the voltage of the electrode pair so low that a discharge shock wave cannot be generated in the liquid of the balloon.

2. The device according to claim 1, characterized in that: The first branch is a section of wire.

3. The device according to claim 1, characterized in that: The device also includes a power supply; the power supply is used to provide voltage to the electrode pair; the power supply includes a current limiting resistor; the current limiting resistor is arranged on the first branch.

4. The device according to claim 1, characterized in that: When the circuit breaker puts the first branch into a closed state, the circuit breaker is also used to put the branch where the voltage-dividing resistor is located into an open state.

5. The device according to claim 1, characterized in that: The voltage detector includes a first voltage collector and a second voltage collector; the first voltage collector is arranged on one side of the voltage-dividing resistor, and the second voltage collector is arranged on the other side of the voltage-dividing resistor.

6. The device according to claim 1, characterized in that: It also includes a controller; when the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the controller is configured to receive a voltage detection value of the voltage detector and compare the voltage detection value with a preset voltage value range; when the voltage detection value is within the preset voltage value range, it is determined that the balloon is in a normal state; When the voltage detection value is outside the preset range of voltage values, it is determined that the balloon is leaking; the preset range of voltage values ​​is obtained based on the voltage detection value detected by the voltage detector when the balloon is in a normal state, the first branch is in an open circuit state, and voltage is applied to the electrode pair.

7. A shock wave balloon catheter device, comprising A balloon; the balloon can be filled with liquid; An electrode pair; the electrode pair is located in the balloon; when a voltage is applied to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon; Features: The device also includes A voltage-dividing resistor; the voltage-dividing resistor is connected in series with the electrode pair; A first branch; the first branch is connected in series with the electrode pair, and the first branch is connected in parallel with the voltage-dividing resistor; A current detector; the current detector is used to detect the current passing through the voltage dividing resistor; Circuit breaker; the circuit breaker is used to make the first branch have two states: open and disconnected; When the circuit breaker makes the first branch circuit in a connected state and applies voltage to the electrode pair, the electrode pair generates a discharge shock wave in the liquid of the balloon; When the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the voltage dividing effect of the voltage dividing resistor makes the voltage of the electrode pair so low that a discharge shock wave cannot be generated in the liquid of the balloon.

8. The device according to claim 7, characterized in that: The first branch is a section of wire.

9. The device according to claim 7, characterized in that: The device also includes a power supply; the power supply includes a current limiting resistor; and the current limiting resistor is arranged on the first branch.

10. The device according to claim 7, characterized in that: It also includes a controller; when the circuit breaker causes the first branch to be in an open circuit state and a voltage is applied to the electrode pair, the controller is configured to receive a current detection value of the current detector and compare the current detection value with a preset current value range; when the current detection value is within the preset current value range, it is determined that the balloon is in a normal state; When the current detection value is outside the preset range of current values, the balloon is judged to be leaking; the preset range of current values ​​is obtained based on the current detection value detected by the current detector when the balloon is in a normal state, the first branch is in an open circuit state, and a voltage is applied to the electrode pair.

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