Transduction pulse balloon dilation catheter

Abstract

The application discloses a kind of transducing pulse balloon dilatation catheter, belong to medical instrument technical field, this kind of transducing pulse balloon dilatation catheter, including balloon, electrolyte is formed with pulse interval for containing in the balloon inside;Through the balloon, as the inner tube of the balloon transport carrier;Pulse generating assembly is arranged in the pulse interval;Several flow absorption components are arranged on the inner wall of the balloon, for the high-voltage current generated when the pulse generating assembly works is absorbed and utilized.By setting flow absorption component on the inner wall of the balloon, when the pulse generating assembly in the balloon generates high-voltage current during working process, flow absorption component can transmit the generated high-voltage current to external feedback system through wire, avoid high-voltage current to reach balloon outside directly acting on patient's blood vessel by directly breaking through balloon, reduce the influence on patient's heart rate.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a transducer pulse balloon dilation catheter. Background Technology

[0002] Cardiovascular disease has long been a leading cause of death worldwide. However, over the past half-century, advancements in medical knowledge and technology have significantly reduced the mortality rate from cardiovascular diseases. Among these advancements, balloon angioplasty has played a crucial role in reducing the incidence and mortality of obstructive tubular artery disease.

[0003] For example, Chinese patent document CN113648048A discloses a shockwave balloon catheter system with controllable discharge. The system includes a shockwave therapy unit, a balloon, a catheter, and multiple electrode pairs. The catheter passes through the balloon, and the shockwave therapy unit is connected to one end of the catheter. The shockwave balloon generates pulses propagating through the liquid via cathode and anode discharges within the balloon. During the discharge process, the cathode and anode generate high-voltage discharges, producing high-frequency pulse waves. The shockwaves are conducted through the liquid within the balloon to the tissues and calcifications outside the balloon, achieving a lithotripsy effect. However, some high-voltage electricity still penetrates the balloon through the electrolyte, resulting in some high-voltage electricity appearing on the outermost side of the balloon. This high-voltage electricity acts on the patient's blood vessels, thus interfering with the heart rate. Summary of the Invention

[0004] The purpose of this invention is to provide a transducer pulse balloon dilation catheter to solve the problems mentioned in the background art regarding the use of existing balloon catheters.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a transducer pulse balloon dilation catheter, comprising a balloon, wherein a pulse zone containing electrolyte is formed inside the balloon;

[0006] An inner tube that penetrates the balloon and serves as the balloon's transport carrier;

[0007] A pulse generating component is installed within the pulse range;

[0008] Several suction components are installed on the inner wall of the balloon to absorb and utilize the high-voltage current generated when the pulse generating component is working.

[0009] Preferably, the suction components are circumferentially distributed around the central axis of the balloon, and the suction components are connected to an external host system via wires.

[0010] Preferably, the suction component is a metal sheet.

[0011] Preferably, the suction component is a transducer.

[0012] Preferably, the pulse generating component is connected to the anode and cathode of the high-voltage pulse power supply within the pulse interval via wires.

[0013] Preferably, the transducer is fixed to the inner wall of the balloon by adhesive bonding.

[0014] Preferably, the transducer is fixed to the inner wall of the balloon by a PTFE adhesive.

[0015] Preferably, the piezoelectric crystal of the transducer is a piezoelectric single crystal or a piezoelectric ceramic.

[0016] Preferably, the inner tube is arranged along the central axis of the balloon.

[0017] Preferably, the pulse generating component is fixed on the inner tube.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By providing a suction component on the inner wall of the balloon, when the pulse generating component inside the balloon generates a high-voltage current during operation, the suction component can absorb and utilize the generated high-voltage current. In the preferred embodiment, the suction component is transmitted to the external host system through a wire for secondary use, avoiding the high-voltage current from directly penetrating the balloon and reaching the outside of the balloon to directly act on the patient's blood vessels, thus reducing the impact on the patient's heart rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0024] In the diagram: 1. Balloon; 100. Pulse zone; 2. Inner tube; 3. Pulse generating assembly; 4. Suction component; 4a. Metal sheet; 4b. Transducer; 5. Lead wire. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] A transducer pulse balloon dilation catheter includes a balloon 1 and an inner tube 2 that runs through the balloon 1. The inside of the balloon 1 forms a pulse interval 100 that accommodates a pulse generating component 3. The balloon 1 is delivered to the location of vascular calcification through the inner tube 2. The pulse generating component 3 in the pulse interval 100 starts to operate and generates high-frequency pulse waves. The shock waves drive the balloon 1 and the vascular calcification tissue attached to the outside of the balloon 1 to vibrate, thereby achieving the purpose of lithotripsy.

[0027] Specifically, the pulse generating component 3 is the anode and cathode of a high-voltage pulse power supply that extends through wires to the pulse interval 100 inside the balloon 1. At the same time, the pulse interval 100 is filled with electrolyte. During operation, the anode and cathode release 1000-500V pulse high-voltage electricity, which in turn generates ultrasound. The ultrasound propagates through the electrolyte and drives the balloon 1 and the calcified vascular tissue attached to the outside of the balloon 1 to vibrate. Based on the characteristics of ultrasound, the purpose of lithotripsy is achieved.

[0028] Furthermore, the anode and cathode of the high-voltage pulse power supply can be set on the inner tube 2 or suspended in the pulse interval 100 inside the balloon 1. Based on the characteristics of ultrasonic wave propagation, in order to ensure that the ultrasonic wave intensity received by various parts of the outer wall of the balloon 1 is approximately the same and to achieve the purpose of uniform fragmentation, the anode and cathode are preferably set along the central axis of the balloon 1. Preferably, the inner tube 2 passes through the balloon 1 along the central axis of the balloon 1, and the anode and cathode of the high-voltage pulse power supply are directly set on the inner tube 2. At this time, the distance from the anode and cathode to various parts of the outer wall of the balloon 1 is approximately the same, and the ultrasonic wave intensity received by various parts of the outer wall is approximately the same.

[0029] Furthermore, when the anode and cathode of the aforementioned high-voltage pulse power supply release pulsed high voltage of 1000-5000V, most of the high voltage will generate high-voltage pulses. A portion of the high voltage will come into contact with the electrolyte and balloon 1, thereby penetrating balloon 1 and reaching its outermost edge, directly affecting the patient's blood vessels and interfering with the patient's heart rate. To prevent the high voltage from penetrating balloon 1 and directly affecting the patient's blood vessels, thus interfering with the patient's heart rate, a suction component 4 is provided on the inner wall of balloon 1. The suction component 4 drains and absorbs the high voltage current, preventing it from penetrating balloon 1, reaching its outermost edge, and directly affecting the patient's blood vessels, thus interfering with the patient's heart rate.

[0030] Furthermore, considering the uncertainty of the direction of high voltage current propagation along the electrolyte inside the balloon 1, preferably, multiple suction components 4 are provided, and the suction components 4 are distributed circumferentially around the central axis of the balloon 1, thereby absorbing the vast majority of high voltage current and preventing high voltage current from passing through the outer wall of the balloon 1 through the gap.

[0031] Furthermore, the suction component 4 is connected to an external host system via a wire 5 for secondary utilization of the absorbed energy.

[0032] Specifically, the suction component 4 is a metal sheet 4a. The balloon 1 is equipped with several wires 5. One end of the wire 5 is connected to the metal sheet 4a, and the other end is connected to the external host system. The metal sheet 4a is directly fixed to the inner wall of the balloon 1. This fixing method can be adhesive or other methods. When the anode and cathode of the high-voltage pulse power supply discharge at high voltage, part of the high voltage that fails to generate ultrasound is conducted to the position of the metal sheet 4a through the electrolyte. It then enters the external feedback system through the conduction of the metal sheet 4a and the wires 5, thereby avoiding the high voltage from directly acting on the blood vessels and reducing the impact on the patient's heart rhythm.

[0033] Furthermore, through the metal sheet 4a and the wire 5, the high-voltage electricity that fails to generate a shock wave will return to the external host system. The external host system is connected to the high-voltage pulse power supply, thereby realizing the secondary utilization of the high-voltage electricity. At the same time, in order to reduce the loss of high-voltage electricity in the secondary utilization process and to further simplify the system, the transducer 4b is preferred as the suction component 4. The transducer 4b is a device that can directly convert high-voltage pulses into ultrasound. By selecting the transducer 4b as the suction component 4, the treatment effect can be further improved by the secondary pulse generated by the transducer 4b while reducing power loss.

[0034] Specifically, transducer 4b is connected to an external host system via wire 5. Transducer 4b itself has a starting power, which is the starting power for generating the inverse piezoelectric effect. At this time, the piezoelectric crystal of transducer 4b can be a piezoelectric single crystal or a piezoelectric ceramic. When the high-voltage pulse current that does not generate a shock wave is recovered by transducer 4b, the high-voltage current that reaches the starting power of transducer 4b will generate a shock wave through the inverse piezoelectric effect, causing the balloon 1 and the surrounding calcified vascular tissue to vibrate and break the calcified area of ​​the blood vessel. The high-voltage current that does not reach the starting power of transducer 4b will be transmitted to the external host system through wire 5 and then recovered by the host of the high-voltage pulse power supply, which can be used to generate shock waves later, thus playing the role of energy recovery.

[0035] Furthermore, the transducer 4b can be fixed to the inner wall of the balloon 1 by adhesive bonding. Preferably, the transducer 4b and the balloon 1 are connected by PTFE adhesive. Connecting the transducer 4b and the balloon 1 by PTFE adhesive can improve the stability of the transducer 4b after installation.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transducer pulse balloon dilation catheter, characterized in that: include The balloon (1) has a pulse zone (100) inside which is filled with electrolyte. The inner tube (2) penetrates the balloon (1) and serves as the transport carrier of the balloon (1); A pulse generating component (3) is disposed within the pulse interval (100), and the pulse generating component (3) is fixed on the inner tube (2); Several suction components (4) are provided on the inner wall of the balloon (1) to absorb and utilize the high voltage current generated when the pulse generating component (3) is working. The suction components (4) are distributed circumferentially around the central axis of the balloon (1). The suction components (4) are transducers (4b). The suction components (4) are connected to the external host system through wires (5).

2. The transducer pulse balloon dilation catheter according to claim 1, characterized in that: The pulse generating component (3) is connected to the anode and cathode of a high-voltage pulse power supply within the pulse interval (100) via wires.

3. The transducer pulse balloon dilation catheter according to claim 1, characterized in that: The transducer (4b) is fixed to the inner wall of the balloon (1) by adhesive bonding.

4. The transducer pulse balloon dilation catheter according to claim 3, characterized in that: The transducer (4b) is fixed to the inner wall of the balloon (1) by PTFE adhesive.

5. A transducer pulse balloon dilation catheter according to claim 1 or 4, characterized in that: The piezoelectric crystal of the transducer (4b) is a piezoelectric single crystal or a piezoelectric ceramic.

6. The transducer pulse balloon dilation catheter according to claim 1, characterized in that: The inner tube (2) is arranged along the central axis of the balloon (1).

Images