Ultrasonic ablation balloon catheter and ultrasonic ablation equipment

Abstract

The invention discloses an ultrasonic ablation balloon catheter and ultrasonic ablation equipment, and relates to the technical field of ultrasonic ablation, and the ultrasonic ablation balloon catheter comprises a semi-compliance balloon which is of a hollow closed structure; the multi-cavity tube is connected to the near end of the semi-compliant balloon, a filling cavity channel and a guide wire cavity channel which do not communicate with each other and extend in the axis direction of a tube body of the multi-cavity tube are formed in the multi-cavity tube, and the far end of the filling cavity channel and the far end of the guide wire cavity channel communicate with the near end of the semi-compliant balloon; the far end of the inner tube sequentially penetrates through the guide wire cavity and an inner cavity of the semi-compliant balloon and extends out of the far end position of the semi-compliant balloon, and the inner tube is in sealing fit with the guide wire cavity and the far end position of the semi-compliant balloon; the ultrasonic transducer is located in the semi-compliant balloon and fixed to the inner tube, the requirement for different blood vessel diameters of a renal artery trunk and branches can be met, the time for repeatedly replacing an ultrasonic ablation balloon catheter in an operation can be shortened, and the risk of vascular complications is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic ablation, in particular to an ultrasonic ablation balloon catheter and an ultrasonic ablation device. BACKGROUND

[0002] The existing ultrasonic ablation of renal artery sympathetic nerves at home and abroad is currently in the clinical trial stage. The ultrasonic ablation product that has been marketed abroad is only the Recro company that obtained FDA marketing approval in 2024. The products that have been marketed or are under research at home and abroad are all whole exchange types, and the existing renal artery ultrasonic ablation products on the market are all 6F catheters except for the radiofrequency catheter. The ultrasonic balloon catheter is a 6F catheter with a large outer diameter, which causes a large trauma area in the femoral artery approach. The ultrasonic balloon catheter is a non-compliant balloon, and the balloon catheter has multiple specifications from 3.0 to 8.0 mm according to different diameters. During the operation, different balloon catheters need to be replaced due to different blood vessel diameters, and the repeated withdrawal of the balloon catheter outside greatly increases the operation time and the operation risk and treatment cost of the patient. In addition, the repeated replacement of the balloon catheter needs to continuously remove the bubbles in the balloon, and the bubbles will affect the propagation of ultrasonic waves. SUMMARY

[0003] The purpose of the present application is to provide an ultrasonic ablation balloon catheter and an ultrasonic ablation device to solve the problems existing in the prior art, meet the needs of different blood vessel diameters of the main trunk and branches of the renal artery, reduce the time of repeatedly replacing the ultrasonic ablation balloon catheter during the operation, and reduce the risk of blood vessel complications.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides an ultrasonic ablation balloon catheter, comprising: a semi-compliant balloon in a hollow closed structure; a multi-lumen tube connected to the proximal end of the semi-compliant balloon, the multi-lumen tube is provided with a filling lumen and a guide wire lumen that are not connected to each other and extend along the axis direction of the tube body of the multi-lumen tube, the distal ends of the filling lumen and the guide wire lumen are connected to the proximal end of the semi-compliant balloon, the proximal end of the filling lumen is used to communicate with a pressure regulating mechanism, and the proximal end of the guide wire lumen is used to pass into a guide wire; an inner tube, the distal end of the inner tube sequentially passes through the guide wire lumen and the inner cavity of the semi-compliant balloon, and extends out of the distal end position of the semi-compliant balloon, the inner tube is in sealing cooperation with the guide wire lumen and the distal end position of the semi-compliant balloon, and is used for the guide wire to pass through; an ultrasonic transducer located in the semi-compliant balloon and fixed on the inner tube.

[0005] Optionally, the multi-lumen tube further has a pressure relief lumen extending along the axial direction of the multi-lumen tube, the pressure relief lumen is independent of the filling lumen and the guide wire lumen, the distal end of the pressure relief lumen is connected to the proximal end of the semi-compliant balloon, and the proximal end of the pressure relief lumen is connected to the pressure regulating mechanism.

[0006] Optionally, the ultrasonic transducer comprises: a support tube sleeved on the inner tube and located in the semi-compliant balloon; a piezoceramic ring sleeved on the support tube.

[0007] Optionally, the support tube is an electrically conductive structure and is electrically connected to the piezoceramic ring, and the outer wall of the piezoceramic ring and the support tube are both provided with an electrically conductive cable.

[0008] Optionally, the multi-lumen tube further has a pressure relief lumen connected to the semi-compliant balloon, and the electrically conductive cable is led out from the filling lumen or the pressure relief lumen.

[0009] Further, the application also provides an ultrasonic ablation device, which comprises: the ultrasonic ablation balloon catheter as described above; a pressure regulating mechanism provided with a filling mechanism and a pressure sensor, the filling mechanism is connected to the proximal end of the filling lumen of the ultrasonic ablation balloon catheter, and the pressure sensor is arranged on the connecting pipeline between the filling mechanism and the filling lumen.

[0010] Optionally, the multi-lumen tube of the ultrasonic ablation balloon catheter further has a pressure relief lumen connected to the semi-compliant balloon. the pressure regulating mechanism further comprises a pressure relief mechanism connected to the proximal end of the pressure relief lumen, the pressure sensor is arranged on the connecting pipeline between the filling mechanism and the filling lumen or on the connecting pipeline between the pressure relief mechanism and the pressure relief lumen, and the inner cavities of the filling mechanism and the pressure relief mechanism are filled with a cooling liquid.

[0011] Optionally, the filling mechanism and the pressure relief mechanism are both provided with an adjusting valve, and the two liquid inlet and outlet ports are respectively connected to the filling lumen and the pressure relief lumen through the corresponding adjusting valves.

[0012] Optionally, the filling mechanism and the pressure relief mechanism are both in the structure of a syringe, and the filling mechanism and the pressure relief mechanism are both provided with a driving mechanism for driving the piston rod thereof.

[0013] Optionally, a temperature sensor is arranged in the inflation lumen or the pressure relief lumen, a probe of the temperature sensor extends into the semi-compliant balloon and is arranged in a spaced manner with the transducer.

[0014] The present application has the following technical effects relative to the prior art: The ultrasonic ablation balloon catheter disclosed in the present application can be inserted into the main stem and branches of the renal artery through the radial artery blood vessel when the renal artery is intervened and the sympathetic nerve of the renal artery is ablated, different inflation pressures can be selected through a pressure adjusting mechanism in the face of different blood vessel diameters, the semi-compliant balloon is inflated to the target diameter through the inflation lumen, so that the outer wall of the semi-compliant balloon and the blood vessel wall are attached, and the requirement that only one ultrasonic ablation balloon catheter can meet the different blood vessel diameters of the main stem and branches of the renal artery is realized, which can reduce the time of repeatedly replacing the ultrasonic ablation balloon catheter during the operation and reduce the risk of blood vessel complications. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description can only be some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 The present application discloses an example of an ultrasonic ablation balloon catheter overall structure schematic diagram; Figure 2 The present application discloses an example of an ultrasonic ablation balloon catheter partial structure schematic diagram; Figure 3 The present application discloses an example of a multi-lumen tube cross-sectional structure schematic diagram; Figure 4 The present application discloses an example of an ultrasonic transducer specific structure schematic diagram; Figure 5 The present application discloses an example of an ultrasonic ablation balloon catheter overall structure schematic diagram; Figure 6 The present application discloses an example of a pressure adjusting mechanism overall structure schematic diagram; Wherein, 1-tip tube, 2-semi-compliance balloon, 3-ultrasonic transducer, 4-temperature sensor, 5-inner tube, 6-multilumen tube, 7-stress dispersion tube, 8-catheter seat, 9-electricity connection, 10-overflow cavity, 11-pressure relief cavity, 12-guide wire cavity, 13-braided layer, 14-nylon layer, 15-support tube, 16-piezoelectric ceramic ring, 17-conductive cable, 18-joint assembly, 19-first housing, 20-second housing, 21-infusion tube, 22-connection pipeline, 23-syringe structure, 24-solenoid valve, 25-pressure sensor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] The purpose of the present application is to provide an ultrasonic ablation balloon catheter and an ultrasonic ablation device to solve the problems existing in the prior art, which can meet the needs of different blood vessel diameters of the main stem and branches of the renal artery, reduce the time of repeatedly replacing the ultrasonic ablation balloon catheter during the operation, and reduce the risk of blood vessel complications.

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0020] As Figures 1 to 6As shown, the present application provides an ultrasonic ablation balloon catheter which can be applied to renal artery sympathetic nerve ablation treatment of refractory hypertension, which comprises a semi-compliant balloon 2, a multi-lumen tube 6, an inner tube 5 and an ultrasonic transducer 3, preferably the overall length is 120cm~135cm; the semi-compliant balloon 2 is in a closed structure of hollow shape, the diameter of the semi-compliant balloon 2 can be inflated from 3.0mm to 8.0mm; the multi-lumen tube 6 is connected to the proximal end of the semi-compliant balloon 2, the outer diameter is between 5French and 6French, the multi-lumen tube 6 is provided with inflation lumen 10 and guide wire lumen 12 which are not communicated with each other and extend along the axis direction of the tube body of the multi-lumen tube 6, the distal ends of the inflation lumen 10 and the guide wire lumen 12 are communicated with the proximal end of the semi-compliant balloon 2, the proximal end of the inflation lumen 10 is used for being communicated with the pressure regulating mechanism, and the proximal end of the guide wire lumen 12 is used for penetrating into the guide wire; the distal end of the inner tube 5 penetrates through the guide wire lumen 12 and the inner cavity of the semi-compliant balloon 2 in sequence and extends out of the distal end position of the semi-compliant balloon 2, the inner tube 5 is sealed with the guide wire lumen 12 and the distal end position of the semi-compliant balloon 2 and is used for the guide wire to penetrate through; the ultrasonic transducer 3 is located in the semi-compliant balloon 2 and is fixed on the inner tube 5, wherein the ultrasonic transducer 3 is made of PZT-4, PZT-5, PZT-8 and piezoelectric composite single crystal material, and the conductive cable 17 connected with the ultrasonic transducer 3 is connected with the external power supply after penetrating through the inflation lumen 10.

[0021] The ultrasonic ablation balloon catheter disclosed by the present application can enter the main stem and branches of the renal artery through the radial artery blood vessel when the renal artery is intervened and the renal artery sympathetic nerve ablation is performed, different inflation pressures can be selected through the pressure regulating mechanism in the face of different blood vessel diameters, the semi-compliant balloon 2 is inflated to the target diameter through the inflation lumen 10, so that the outer wall of the semi-compliant balloon 2 and the blood vessel wall are fitted, and the requirement of different blood vessel diameters of the main stem and branches of the renal artery can be met by only one ultrasonic ablation balloon catheter, which can reduce the time of repeatedly replacing the ultrasonic ablation balloon catheter during the operation and reduce the risk of blood vessel complications.

[0022] In the embodiment, the pressure regulating mechanism inflates the semi-compliant balloon 2 with inflation fluid through the inflation lumen 10, so that the diameter of the semi-compliant balloon 2 can be inflated to the required size; the inflation fluid is preferably a cooling liquid, which is used to cool the transducer after inflating the semi-compliant balloon 2, so as to avoid damaging the blood vessel.

[0023] In the embodiment, the length of the inner tube 5 can be selected according to the working condition. In some cases, the length of the inner tube 5 is relatively short, the proximal end of the inner tube 5 is inserted into the guide wire lumen 12, the distal end of the inner tube 5 is inserted into the proximal end of the semi-compliant balloon 2, and the distal end of the inner tube 5 is extended out of the distal end of the semi-compliant balloon 2 after passing through the inner lumen of the semi-compliant balloon 2. In other cases, the length of the inner tube 5 matches the overall length of the guide wire lumen 12 and the semi-compliant balloon 2, and the inner tube 5 is arranged through the entire guide wire lumen 12 and the semi-compliant balloon 2. The guide wire lumen 12 and the inner tube 5 are used to be compatible with the guide wire of 14 or more, that is, the diameter of the guide wire is greater than 0.36 mm, In the embodiment, the multi-lumen tube 6 and the inner tube 5 are common medical-grade polymer extruded tubes such as Pebax, TPU, nylon, PI, PP, and PEEK, or the multi-lumen tube 6 is a nylon tube with stainless steel braiding or nylon braiding, the braiding structure is a common 1-press-2 form, the wire diameter is 0.01-0.03 mm, and preferably the multi-lumen tube 6 is wrapped with a braiding layer 13 and a nylon layer 14 in sequence on the outer circumferential side. The semi-compliant balloon 2 is made of common medical materials such as nylon materials and Pebax materials, the semi-compliant balloon 2 can withstand a pressure under a flow rate of 10 mL / min-70 ml / min, specifically can withstand a pressure of more than 6 atm, and the diameter of the semi-compliant balloon 2 is 4.5 mm when the nominal pressure applied to the semi-compliant balloon 2 is 2 atm. Further, to ensure the effective application of the entire ultrasonic ablation balloon catheter, the burst pressure that the semi-compliant balloon 2 can withstand is greater than 16 atm.

[0024] Based on the above embodiment, the pressure relief lumen 11 extending along the axis direction of the tube body of the multi-lumen tube 6 is further arranged in the multi-lumen tube 6, so that the multi-lumen tube 6 is a three-lumen tube structure, the pressure relief lumen 11 is independent of the inflation lumen 10 and the guide wire lumen 12, the distal end of the pressure relief lumen 11 is in communication with the proximal end of the semi-compliant balloon 2, and the proximal end of the pressure relief lumen 11 is used to be in communication with the pressure regulating mechanism. The inflation lumen 10 is used to inflate the semi-compliant balloon 2, the pressure relief lumen 11 is used to relieve the pressure of the semi-compliant balloon 2, and there is a pressure difference between the inflation pressure of the semi-compliant balloon 2 by the inflation lumen 10 and the pressure relief pressure of the semi-compliant balloon 2 by the pressure relief lumen 11, so that the semi-compliant balloon 2 can be inflated to the required size. And by arranging the pressure relief lumen 11, the change of the inflation pressure can be in two ways of constant flow rate and constant flow rate.

[0025] The pressure regulating mechanism fills the inflation fluid into the semi-compliant balloon 2 through the inflation lumen 10, and discharges the inflation fluid through the pressure relief lumen 11, the inflation fluid is preferably a cooling liquid, the cooling liquid flows between the inflation lumen 10 and the pressure relief lumen 11 to continuously cool the transducer after inflating the semi-compliant balloon 2, so as to avoid damaging the blood vessel.

[0026] To facilitate the arrangement of the overflow lumen 10, the pressure relief lumen 11 and the guide wire lumen 12, in an example, the outer diameter of the entire ultrasonic ablation balloon catheter is 1.5mm-1.73mm, preferably 1.73mm, and is compatible with a 6F vascular sheath or guide catheter; wherein the inner diameter of the guide wire lumen 12 is 0.60mm, the inner diameter of the overflow lumen 10 and the pressure relief lumen 11 is 0.5mm-0.8mm, preferably 0.8mm. And the guide wire lumen 12, the overflow lumen 10 and the pressure relief lumen 11 are triangularly distributed.

[0027] Moreover, the cross section of the overflow lumen 10 and the pressure relief lumen 11 can be a fan-shaped structure, or a circular structure or other irregular structure.

[0028] Based on the above embodiment, the ultrasonic transducer 3 comprises a support tube 15 and a piezoelectric ceramic ring 16; the support tube 15 is located in the semi-compliant balloon 2 and is sleeved on the inner tube 5; the piezoelectric ceramic ring 16 is sleeved on the support tube 15; to use the support tube 15 as support and can ensure the stability of the installation of the piezoelectric ceramic ring 16, and the piezoelectric ceramic can emit ultrasonic energy along the direction of 360° at the same time, that is, it can complete the annular ablation.

[0029] Wherein, the support tube 15 is a conductive structure and is electrically connected with the piezoelectric ceramic ring 16, the support tube 15 preferably adopts a stainless steel tube, and the outer wall of the piezoelectric ceramic ring 16 and the support tube 15 are both led out with a conductive cable 17, specifically, an electrode is arranged on the outer wall of the piezoelectric ceramic ring 16 and the support tube 15, and the conductive cable 17 is led out through the electrode respectively, so as to be connected with an external power supply.

[0030] To avoid the influence of the overflow fluid on the electrode, after the two electrodes are respectively connected on the outer wall of the piezoelectric ceramic ring 16 and the support tube 15, they are both packaged with insulating materials, for example, using pyrolytic carbon or the like.

[0031] In a specific example, the ultrasonic transducer 3 comprises a PZT-8 piezoelectric ceramic ring 16, the outer diameter of the PZT-8 piezoelectric ceramic ring 16 is 1.0-1.2mm, preferably 0.65mm. A ceramic negative electrode is welded on the support tube 15, and a ceramic positive electrode is welded on the edge of the outer wall of the PZT-8 piezoelectric ceramic ring 16, and an insulating treatment is performed on them using insulating glue, and the thickness of the insulating glue is preferably 1 / 3 of the wavelength of the ultrasonic transducer 3.

[0032] And to facilitate the lead, the proximal end of the support tube 15 extends out of the end position of the piezoelectric ceramic ring 16, one electrode is installed at the proximal end position of the support tube 15, and the other electrode is installed at the proximal end position of the outer wall of the piezoelectric ceramic ring 16.

[0033] In the embodiment based on the multi-lumen tube 6 further provided with the pressure relief channel 11, the conductive cable 17 is led out of the overflow channel 10 or the pressure relief channel 11 according to different working conditions, and the heat generated by the conductive cable 17 during the operation of the ultrasonic transducer 3 is led out through the flow of the overflow fluid between the overflow channel 10 and the pressure relief channel 11, thereby reducing the self-heating phenomenon of the conductive cable 17 during the operation of the ultrasonic transducer 3.

[0034] Further, based on the above-mentioned embodiments, the proximal end of the multi-lumen tube 6 is connected with the catheter seat 8, and the catheter seat 8 is provided with two joint assemblies 18, one joint assembly 18 being in communication with the overflow channel 10 and the pressure regulating mechanism, and the other joint assembly 18 being in communication with the pressure relief channel 11 and the pressure regulating mechanism; wherein the distal end of the catheter seat 8 is further provided with a power connection 9, and the conductive cable 17 connected with the ultrasonic transducer 3 is connected with the power connection 9 after being sealed out of the catheter seat 8.

[0035] In the embodiment, the stress diffusion tube 7 is further arranged between the proximal end of the multi-lumen tube 6 and the catheter seat 8, so as to reduce the cracks, fatigue fracture or plastic deformation caused by stress concentration, and prolong the service life of the whole device.

[0036] In the embodiment, the distal end of the semi-compliant balloon 2 is connected with the tip tube 1, and the inner tube 5 is inserted into the tip tube 1 after passing through the semi-compliant balloon 2.

[0037] Further, the present application also provides an ultrasonic ablation device, which comprises a pressure regulating mechanism and an ultrasonic ablation balloon catheter as described above; the pressure regulating mechanism is provided with an overflow mechanism and a pressure sensor 25, the overflow mechanism being in communication with the proximal end of the overflow channel 10 of the ultrasonic ablation balloon catheter, and the pressure sensor 25 being arranged on the connecting pipeline 22 between the overflow mechanism and the overflow channel 10; the pressure value of the overflow fluid in the overflow channel 10 obtained through the pressure sensor 25 is used to indirectly obtain the inflation pressure in the semi-compliant balloon 2, so as to obtain the corresponding diameter of the semi-compliant balloon 2, or in other words, the inflation pressure of the semi-compliant balloon 2 is adjusted by the overflow mechanism, and the feedback is performed by the pressure sensor 25, so as to adjust the semi-compliant balloon 2 to the target diameter to match the corresponding blood vessel diameter.

[0038] In the embodiment based on the multi-lumen tube 6 further provided with the pressure relief channel 11, the pressure regulating mechanism further comprises a pressure relief mechanism, the pressure relief mechanism being in communication with the proximal end of the pressure relief channel 11, and the inner cavities of the overflow mechanism and the pressure relief mechanism being filled with cooling liquid, so that different inflation pressures can be selected to make the semi-compliant balloon 2 inflate to the target diameter when the renal artery is intervened, so that the semi-compliant balloon 2 can be attached to the blood vessel wall; since the pressure relief mechanism and the pressure relief channel 11 are arranged, the change of the inflation pressure can be in the form of constant flow rate or in the form of constant flow volume.

[0039] The pressure sensor 25 is arranged on the connecting pipeline 22 between the inflation mechanism and the inflation cavity 10, or the pressure sensor 25 is arranged on the connecting pipeline 22 between the pressure relief mechanism and the pressure relief cavity 11.

[0040] The ultrasonic ablation device is also provided with a controller, so that the pressure sensor 25 is electrically connected to the inflation mechanism and the pressure relief mechanism through the controller, and then the self-adaptive adjustment of the pressure feedback is realized according to the preset pressure value.

[0041] In order to further improve the flexibility of the inflation pressure adjustment, based on the above embodiment, the inflation mechanism and the pressure relief mechanism are provided with adjusting valves, and the two liquid inlet and outlet ports are connected to the inflation cavity 10 and the pressure relief cavity 11 through the corresponding adjusting valves. The inflation pressure in the semi-compliant balloon 2 can be adjusted by adjusting the adjusting valves, and the inflation pressure in the semi-compliant balloon 2 can be adjusted by changing the flow cross section of the adjusting valves, so as to reduce the time of repeatedly replacing the ultrasonic ablation balloon catheter during the operation and reduce the vascular complications.

[0042] In the embodiment, the adjusting valve is an electromagnetic valve 24, which is electrically connected to the controller, so that the self-adaptive adjustment of the pressure feedback can be realized according to the preset pressure value and the pressure value monitored by the pressure sensor 25. Specifically, by changing the size of the adjusting valve, the internal pressure of the semi-compliant balloon 2 is kept at 2 atm, and the opening size of the adjusting valve is controlled by the controller, so as to control the inflation diameter of the semi-compliant balloon 2 to adapt to different blood vessel diameters.

[0043] The inflation mechanism and the pressure relief mechanism are both provided with a driving mechanism for driving the piston rod, so that the action of the piston rod is controlled by the driving mechanism, and then the positive pressure and the negative pressure are generated in the inflation mechanism and the pressure relief mechanism respectively, and the flow rate of the inflation fluid is adjusted by controlling the action speed of the piston rod, so as to change the size of the internal pressure of the semi-compliant balloon 2. Specifically, one of the two injector structures 23 is used as the inflation mechanism, and the other is used as the pressure relief mechanism. The two injector structures 23 can also move towards each other to increase the circulation flow of the inflation fluid, so as to increase the circulation cooling effect. The compliance of the semi-compliant balloon 2 is shown in Table 1.

[0044] Table 1

[0045] In some other cases, the filling mechanism and the pressure relief mechanism both use pump assemblies. In a specific example, the filling fluid in the filling channel 10 is set to a flow rate of 10 mL / min-70 mL / min, the filling mechanism injects the filling fluid into the filling channel 10 and the semi-compliant balloon 2, and the pressure relief mechanism is set to a negative pressure for extracting the filling fluid from the pressure relief channel 11 and the semi-compliant balloon 2, achieving the purpose of circulating cooling. For example, the injection pressure of the filling mechanism is 60 atm, and the set pressure of the pressure relief mechanism is -20 atm.

[0046] Further, based on the above-mentioned embodiments, the filling channel 10 or the pressure relief channel 11 is internally provided with a temperature sensor 4, the probe of the temperature sensor 4 extends into the semi-compliant balloon 2 and is spaced apart from the transducer, for monitoring the internal temperature of the semi-compliant balloon 2. Preferably, the probe of the temperature sensor 4 is spaced apart from the proximal end of the ultrasonic transducer 3 by about 10 mm.

[0047] The temperature sensor 4 is electrically connected to the controller and adjusts the filling mechanism and the pressure relief mechanism and the electromagnetic valve 24 in real time through temperature feedback, so as to ensure that the temperature of the filling fluid in the semi-compliant balloon 2 is controlled within a reasonable range, and to avoid damage to the blood vessel wall caused by the high temperature of the filling fluid in the semi-compliant balloon 2.

[0048] In the present embodiment, the conductive cable 17 passes through the filling channel 10 or the pressure relief channel 11, and correspondingly, the temperature sensor 4 is arranged in the pressure relief channel 11 or the filling channel 10, so that the conductive cable 17 and the temperature sensor 4 are distributed in the two channels, which helps to reduce the occupation of the flow cross section of the channel, increase the flow cross section of the filling fluid, and thus accelerate the circulating filling fluid. When the filling fluid is a cooling liquid, it can fully ensure the cooling of the ultrasonic transducer 3 and avoid damaging the blood vessel. At the same time, it can also reduce the self-heating phenomenon of the conductive cable 17 when the ultrasonic transducer 3 is working.

[0049] For the selection of the filling fluid, when it is a cooling liquid, water is preferably used, which is easy to obtain and has low use cost. The inner cavity of the filling mechanism is connected to the infusion tube 21 through the valve assembly, the infusion tube 21 is inserted into a sterile water bag or a physiological saline bag containing contrast medium, and the semi-compliant balloon 2 is provided with a medium. The filling mechanism and the pressure relief mechanism are respectively connected to the two connection pipelines 22 through the electromagnetic valve 24, and the two connection pipelines 22 are respectively connected to the two connector assemblies 18 on the catheter seat 8. The inner diameter of the connection pipeline 22 is 0.6 mm-1.7 mm, preferably 2.0 mm, and the inner diameter of the infusion tube 21 is 1.7 mm-4.5 mm, preferably 3.0 mm.

[0050] Based on the above-mentioned embodiments, the ultrasonic ablation device comprises a shell, the shell comprises a first shell 19 and a second shell 20, the first shell 19 and the second shell 20 are detachably connected between each other, a containing space is formed therebetween, and components such as the overflow mechanism, the pressure relief mechanism, the regulating valve and the controller are all installed in the containing space of the shell, so that the entire ultrasonic ablation device can be moved to adapt to the required surgical procedure.

[0051] The adaptive changes according to actual requirements are within the protection scope of the present application.

[0052] It should be noted that, for those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In the present application, specific examples are applied to illustrate the principles and embodiments of the present application, and the above-mentioned embodiments are only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in specific embodiments and application scope. In conclusion, the content of the present description should not be understood as a limitation of the present application.

Claims

1. An ultrasonic ablation balloon catheter, characterized by, The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter.

2. The ultrasonic ablation balloon catheter of claim 1, wherein, The application relates to an ultrasonic ablation balloon catheter.

3. The ultrasonic ablation balloon catheter of claim 1, wherein, The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter.

4. The ultrasonic ablation balloon catheter of claim 3, wherein, The application relates to an ultrasonic ablation balloon catheter.

5. The ultrasonic ablation balloon catheter of claim 4, wherein, The application relates to an ultrasonic ablation balloon catheter.

6. An ultrasonic ablation device, characterized by, The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter.

7. The ultrasonic ablation device of claim 6, wherein, The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter.

8. The ultrasonic ablation device of claim 7, wherein, The application relates to an ultrasonic ablation balloon catheter.

9. The ultrasonic ablation device of claim 7, wherein, The application relates to an ultrasonic ablation balloon catheter.

10. The ultrasonic ablation device of claim 7, wherein, The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. 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The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. The application relates to an ultrasonic ablation balloon catheter. 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