Ultrasonic balloon system

Abstract

The ultrasonic balloon system comprises a balloon shell, a flexible metal base and at least one piezoelectric ceramic piece, the flexible metal base is arranged in the balloon shell, a mounting part corresponding to the piezoelectric ceramic piece is arranged on the flexible metal base, and the piezoelectric ceramic piece is mounted on the mounting part and electrically connected with the mounting part. The piezoelectric ceramic piece is electrically connected with one of the positive electrode and the negative electrode of an external ultrasonic driving module through the connecting wire, and the flexible metal base is electrically connected with the other one of the positive electrode and the negative electrode of the external ultrasonic driving module. The piezoelectric ceramic piece is arranged on the flexible metal base, the flexible metal base and the piezoelectric ceramic piece are electrically connected with the ultrasonic driving module, the piezoelectric ceramic piece can directly act on a part needing ultrasonic wave action, for example, the piezoelectric ceramic piece enters a tiny blood vessel and acts on a thrombus part for thrombolysis, an ultrasonic amplitude-change pole is not needed, and the operation is simple and convenient. In addition, the flexible metal base is of a flexible structure and can adapt to a complex structure.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic applications, in particular to an ultrasonic balloon system. Background Art

[0002] Existing medical interventional ultrasonic systems generally use ultrasonic horns to amplify ultrasonic signals to meet the strong energy requirements during processes such as thrombolysis. The ultrasonic horn is generally a rigid structure to achieve efficient transmission of ultrasonic signals from the ultrasonic transducer to the ultrasonic output end. The ultrasonic system based on the ultrasonic horn structure cannot be deformed and cannot operate in complex structures, and the presence of the ultrasonic horn may have a puncturing effect on blood vessels, etc., affecting human health and treatment effects. Summary of the Invention

[0003] The purpose of the utility model is to provide an ultrasonic balloon system to solve the problem that the existing ultrasonic balloon system cannot operate in complex structures due to the need to use an ultrasonic horn.

[0004] To achieve the above purpose, an ultrasonic balloon system provided by the utility model includes a balloon housing, a flexible metal base, and at least one piezoelectric ceramic sheet. The flexible metal base is arranged inside the balloon housing. An installation part is provided on the flexible metal base corresponding to the piezoelectric ceramic sheet. The piezoelectric ceramic sheet is installed on the installation part and is electrically connected to the installation part. The piezoelectric ceramic sheet is electrically connected to one of the positive electrode and the negative electrode of an external ultrasonic drive module through a connecting wire, and the flexible metal base is electrically connected to the other of the positive electrode and the negative electrode of the external ultrasonic drive module.

[0005] Preferably, the flexible metal base is in a flat long strip shape. The flexible metal base includes a flat connecting wire, and part of the area on the flat connecting wire extends to at least one side of the flat connecting wire to form the installation part.

[0006] Preferably, there are at least two installation parts, and adjacent two installation parts are arranged at intervals.

[0007] Preferably, each installation part includes a first installation surface and a second installation surface opposite to the first installation surface. The piezoelectric ceramic sheets are at least four, and one piezoelectric ceramic sheet is installed on each of the first installation surface and the second installation surface respectively.

[0008] Preferably, the connecting wire includes a first wire and a second wire. The first wire is connected to the piezoelectric ceramic chips on the first mounting surfaces of all the mounting parts, and the second wire is connected to the piezoelectric ceramic chips on the second mounting surfaces of all the mounting parts. The ultrasonic balloon system further includes a control host, and the control host is electrically connected to the external ultrasonic driving module to control the conduction of the first wire and / or the conduction of the second wire.

[0009] Preferably, the ultrasonic balloon system further includes a circulating cooling module. An inlet is provided at the upper part of the tail end of the balloon housing, and an outlet is provided at the lower part of the tail end of the balloon housing. The circulating cooling module is communicated with the inlet and the outlet to introduce circulating cooling liquid into the balloon housing.

[0010] Preferably, the circulating cooling module includes a circulating pump, and the circulating pump is communicated with the inlet to pump the cooling liquid into the interior of the balloon housing at a first pressure.

[0011] Preferably, the flow rate of the cooling liquid at the inlet is equal to the flow rate of the cooling liquid at the outlet.

[0012] Preferably, the ultrasonic balloon system further includes a circulating cooling module. A cooling conduit is connected to the end of the tail of the balloon housing, and the interior of the cooling conduit is partitioned to form an inlet channel and an outlet channel for introducing circulating cooling liquid into the balloon housing.

[0013] Preferably, the piezoelectric ceramic chip is adhesively connected to the flexible metal base.

[0014] Compared with the prior art, in the present utility model, the piezoelectric ceramic chip is directly arranged on the flexible metal base, and the flexible metal base and the piezoelectric ceramic chip are electrically connected to the ultrasonic driving module to drive the piezoelectric ceramic chip to generate ultrasonic signals. The piezoelectric ceramic chip can directly act on the part that needs ultrasonic action, for example, enter a tiny blood vessel and act on a thrombus part for thrombolysis without using an ultrasonic horn. The design is ingenious. In addition, the flexible metal base is a flexible structure, which is convenient for the flexible metal base to bend and deform along the shape of blood vessels, etc., can adapt to complex structures, and expands the application scenarios of the ultrasonic balloon system in the embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the principle of the ultrasonic balloon system according to an embodiment of the present utility model.

[0016] Figure 2 is Figure 1 the enlarged view of part A in

[0017] Figure 3 is a structural diagram of the flexible metal base in the ultrasonic balloon system according to an embodiment of the present utility model.

[0018] Figure 4 This is a structural diagram of the bending of the flexible metal base in the ultrasonic balloon system according to the embodiment of the present invention.

[0019] Figure 5 This is a structural diagram of the ultrasonic balloon system according to the embodiment of the present utility model after a piezoelectric ceramic sheet is installed on the flexible metal base.

[0020] Figure 6 is Figure 5 An enlarged view of part B in

[0021] Figure 7 This is a schematic structural diagram of the ultrasonic balloon system according to the embodiment of the present utility model when a cooling catheter is connected to the end of the balloon housing. Detailed implementation manners

[0022] To describe in detail the technical content, structural features, and achieved effects of the present utility model, the following is a detailed description in conjunction with the embodiments and with reference to the accompanying drawings.

[0023] As Figures 1 to 6 shown, the embodiment of the present utility model provides an ultrasonic balloon system, including a balloon housing 1, a flexible metal base 2, and at least one piezoelectric ceramic sheet 3. The flexible metal base 2 is disposed inside the balloon housing 1. An installation portion 22 corresponding to the piezoelectric ceramic sheet 3 is provided on the flexible metal base 2. The piezoelectric ceramic sheet 3 is installed on the installation portion 22 and is electrically connected to the installation portion 22. The piezoelectric ceramic sheet 3 is electrically connected to one of the positive and negative electrodes of an external ultrasonic driving module through a connecting wire 4, and the flexible metal base 2 is electrically connected to the other of the positive and negative electrodes of the external ultrasonic driving module. Specifically, as Figure 3 and Figure 4 shown, the flexible metal base 2 is a flexible structure and can be bent under an external force, so as to facilitate the flexible metal base 2 to bend and deform along the path of the blood vessel. When the ultrasonic balloon system is used to enter a micro-structure such as a blood vessel, the thickness of the piezoelectric ceramic sheet 3 is less than 2 mm, preferably less than 0.5 mm, and can be 0.3 mm. Of course, the thickness of the piezoelectric ceramic sheet 3 can be specifically determined according to the actual use environment. The piezoelectric ceramic sheet 3 and the flexible metal base 2 can be adhesively connected, but are not limited thereto.

[0024] In the embodiment of the present utility model, a piezoelectric ceramic sheet 3 is directly arranged on the flexible metal base 2, and the flexible metal base 2 and the piezoelectric ceramic sheet 3 are electrically connected to an ultrasonic driving module to drive the piezoelectric ceramic sheet 3 to generate an ultrasonic signal. The piezoelectric ceramic sheet 3 can directly act on the part that needs ultrasonic action. For example, it can enter a microvessel and act on a thrombus site for thrombolysis without using an ultrasonic horn. The design is ingenious. In addition, the flexible metal base 2 is a flexible structure, which facilitates the flexible metal base 2 to bend and deform along the shape of blood vessels, etc., can adapt to complex structures, and expands the application scenarios of the ultrasonic balloon system in the embodiment of the present utility model.

[0025] In the embodiment of the present utility model, the flexible metal base 2 is in a flat long strip shape. The flexible metal base 2 includes a flat connecting wire 21, and a part of the area on the flat connecting wire 21 extends to at least one side of the flat connecting wire 21 to form a mounting part 22. Specifically, as Figures 3 to 5 shown, the material of the flexible metal base 2 can be stainless steel or titanium alloy. The mounting part 22 is preferably formed by extending from the flat connecting wire 21 to both sides respectively, so that the structure of the flexible metal base 2 is more symmetrical and stable. The thickness of the flexible metal base 2 can be comprehensively considered according to the actual support strength for the piezoelectric ceramic sheet 3 and the flexible deformation performance. For example, the thickness of the flexible metal base 2 can be 0.2 mm. In addition, designing the flexible metal base 2 in a flat long strip shape also facilitates the deformation of the flexible metal base 2 and the installation of the piezoelectric ceramic sheet 3.

[0026] In the embodiment of the present utility model, there are at least two mounting parts 22, and two adjacent mounting parts 22 are arranged at intervals. Specifically, as Figures 3 to 6 shown, the mounting parts 22 can be set to five. Correspondingly, five regions spaced on the flat connecting wire 21 extend to both sides of the flat connecting wire 21 to form five mounting parts 22. By arranging the mounting parts 22 at intervals, on the one hand, the length range of ultrasonic action can be increased, and on the other hand, the influence of the piezoelectric ceramic sheet 3 on the flexible deformation performance of the flexible metal base 2 can be avoided, so that the flexible metal base 2 with the piezoelectric ceramic sheet 3 installed can still bend and deform by using the part of the flat connecting wire 21 between two adjacent mounting parts 22.

[0027] Furthermore, each mounting part 22 includes a first mounting surface 221 and a second mounting surface 222 opposite to the first mounting surface 221. There are at least four piezoelectric ceramic sheets 3, and one piezoelectric ceramic sheet 3 is respectively mounted on each first mounting surface 221 and each second mounting surface 222. Specifically, as Figures 3 to 6 shown, by attaching two piezoelectric ceramic sheets 3 back to back on each mounting part 22, ultrasonic action can be carried out simultaneously in two directions. For example, ultrasonic thrombolysis can be carried out on the thrombus in a blood vessel simultaneously in two directions, so that thrombolysis can be carried out faster. The design is ingenious.

[0028] Further, the connecting wire 4 includes a first wire and a second wire. The first wire connects the piezoelectric ceramic chips 3 on the first mounting surfaces 221 of all the mounting parts 22, and the second wire connects the piezoelectric ceramic chips 3 on the second mounting surfaces 222 of all the mounting parts 22. The ultrasonic balloon system further includes a control host 8, and the control host 8 is electrically connected to an external ultrasonic driving module to control the conduction of the first wire and / or the conduction of the second wire. Specifically, all the piezoelectric ceramic chips 3 on the first mounting surfaces 221 are connected through the first wire so that the piezoelectric ceramic chips 3 on the first mounting surfaces 221 are connected in parallel, and all the piezoelectric ceramic chips 3 on the second mounting surfaces 222 are connected through the second wire so that the piezoelectric ceramic chips 3 on the second mounting surfaces 222 are connected in parallel, thus eliminating the need to control each piezoelectric ceramic chip 3 individually and making the control more convenient.

[0029] In the embodiment of the present invention, as Figures 1 to 2 shown, the ultrasonic balloon system further includes a circulating cooling module. An inlet 5 is provided at the upper part of the tail end of the balloon housing 1, and an outlet 6 is provided at the lower part of the tail end of the balloon housing 1. The circulating cooling module is communicated with the inlet 5 and the outlet 6 to introduce circulating cooling liquid into the balloon housing 1. The balloon housing 1 includes a front end on the front side in the advancing direction of the balloon housing 1 and a tail end opposite to the front end. The inlet 5 and the outlet 6 are respectively communicated with an external cooling water source 91 through pipes 7, and the pipes 7 can follow the balloon housing 1 into the interior where ultrasound acts, such as blood vessels, making the implementation of circulating cooling more convenient. In some other embodiments, the inlet 5 and the outlet 6 can also be both provided at the upper part of the balloon housing 1.

[0030] Further, as Figures 1 to 2 shown, the circulating cooling module includes a circulating pump 92. The circulating pump 92 is communicated with the inlet 5 to pump the cooling liquid into the interior of the balloon housing 1 at a first pressure. Specifically, the circulating cooling module includes a cooling water source 91 and a circulating pump 92. One end of the circulating pump 92 is connected to the cooling water source 91, and the other end of the circulating pump 92 is connected to the inlet 5. The cooling liquid can be physiological saline. The cooling liquid impacts the front end of the flexible metal base 2 under the action of the first pressure and flows out through the outlet 6 to take away the heat on the piezoelectric ceramic chips 3, avoiding damage such as scalding to human tissues such as blood vessels during the operation of the ultrasonic balloon system. The specific value of the first pressure can be determined through experiments.

[0031] In the embodiment of the present invention, the flow rate of the cooling liquid at the inlet 5 is equal to the flow rate of the cooling liquid at the outlet 6. Specifically, by making the flow rate of the cooling liquid at the inlet 5 the same as the flow rate of the cooling liquid at the outlet 6, a required stable pressure is provided inside the balloon housing 1, so that a certain distance is maintained between the flexible metal base 2 and the inner wall of blood vessels, etc., to avoid damage to blood vessels, etc. caused by the flexible metal base 2.

[0032] It should be noted that in some other specific embodiments of the present utility model, such as Figure 7 shown, the ultrasonic balloon system further includes a circulating cooling module. A cooling conduit 10 is connected to the end of the balloon housing 1. The interior of the cooling conduit 10 is partitioned to form a liquid inlet channel 101 and a liquid outlet channel 102. The liquid inlet channel 101 and the liquid outlet channel 102 are communicated with the circulating cooling module for introducing circulating cooling liquid into the balloon housing 1. Specifically, the cooling conduit 10 is preferably a flexible hose. By arranging the liquid inlet channel 101 and the liquid outlet channel 102 in the cooling conduit 10, the circulating cooling liquid can be introduced into the interior of the balloon housing 1. The cross-sectional area of the liquid inlet channel 101 can be set to be equal to the cross-sectional area of the liquid outlet channel 102 to control the flow rate of the cooling liquid entering the balloon housing 1 to be equal to the flow rate of the cooling liquid discharged from the balloon housing 1.

[0033] The working mode of the ultrasonic balloon system according to the embodiment of the present utility model is as follows: First, the ultrasonic balloon system is delivered to positions such as thrombus. The external circulating pump 92 is started first, and a specific amount of physiological saline is input into the interior of the balloon housing 1. By controlling the flow rate of the cooling liquid at the liquid inlet 5 and the flow rate of the cooling liquid at the liquid outlet 6, the interior of the balloon housing 1 has a corresponding pressure. A specific frequency of electrical signal, such as an electrical signal of 0.5 - 10 MHz, is input into the flexible metal base 2 and the connecting wire 4 through the external ultrasonic driving module. The piezoelectric ceramic sheet 3 generates an ultrasonic signal of the corresponding frequency under the excitation of the electrical signal. The ultrasonic signal penetrates through the physiological saline and the balloon housing 1 and enters the interior of blood vessels, etc. The cavitation effect, etc. can be utilized to cause structural damage to structures such as thrombus, realizing the elimination of thrombus, etc. inside the human body.

[0034] The above-disclosed are only the preferred examples of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An ultrasonic balloon system, characterized in that: It includes a balloon shell, a flexible metal base, and at least one piezoelectric ceramic sheet. The flexible metal base is arranged inside the balloon shell. A mounting portion is provided on the flexible metal base corresponding to the piezoelectric ceramic sheet. The piezoelectric ceramic sheet is mounted on the mounting portion and electrically connected to the mounting portion. The piezoelectric ceramic sheet is electrically connected to one of the positive and negative electrodes of an external ultrasonic drive module through a connecting wire, and the flexible metal base is electrically connected to the other of the positive and negative electrodes of the external ultrasonic drive module.

2. The ultrasonic balloon system according to claim 1, characterized in that: The flexible metal base is in a flat and long strip shape, and includes a flat connecting line. A partial area of ​​the flat connecting line extends toward at least one side of the flat connecting line to form the mounting portion.

3. The ultrasonic balloon system according to claim 1, characterized in that: There are at least two mounting parts, and two adjacent mounting parts are arranged at intervals.

4. The ultrasonic balloon system according to claim 3, characterized in that: Each of the mounting portions includes a first mounting surface and a second mounting surface opposite to the first mounting surface. There are at least four piezoelectric ceramic sheets, and one piezoelectric ceramic sheet is mounted on each of the first mounting surfaces and each of the second mounting surfaces.

5. The ultrasonic balloon system according to claim 4, characterized in that: The connecting wire includes a first wire and a second wire, the first wire connects all the piezoelectric ceramic sheets on the first mounting surface of the mounting part, and the second wire connects all the piezoelectric ceramic sheets on the second mounting surface of the mounting part. The ultrasonic balloon system also includes a control host, which is electrically connected to the external ultrasonic drive module to control the conduction of the first wire and / or control the conduction of the second wire.

6. The ultrasonic balloon system according to claim 1, characterized in that: The ultrasonic balloon system also includes a circulating cooling module, a liquid inlet is provided at the upper part of the tail end of the balloon shell, a liquid outlet is provided at the lower part of the tail end of the balloon shell, and the circulating cooling module is connected to the liquid inlet and the liquid outlet to introduce circulating cooling liquid into the balloon shell.

7. The ultrasonic balloon system according to claim 6, characterized in that: The circulating cooling module includes a circulating pump, which is connected to the liquid inlet to pump the cooling liquid into the interior of the balloon shell at a first pressure.

8. The ultrasonic balloon system according to claim 6, characterized in that: The flow rate of the coolant at the liquid inlet is equal to the flow rate of the coolant at the liquid outlet.

9. The ultrasonic balloon system according to claim 1, characterized in that: The ultrasonic balloon system also includes a circulating cooling module, and a cooling duct is connected to the tail end of the balloon shell. The interior of the cooling duct is divided into a liquid inlet channel and a liquid outlet channel. The liquid inlet channel and the liquid outlet channel are connected to the circulating cooling module for introducing circulating cold coolant into the balloon shell.

10. The ultrasonic balloon system according to claim 1, characterized in that: The piezoelectric ceramic sheet is bonded to the flexible metal base.

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