CN217488696U

CN217488696U - Intravascular ultrasound catheter with noise reduction device

Info

Publication number: CN217488696U
Application number: CN202220994909.3U
Authority: CN
Inventors: 张高杰; 赵士勇
Original assignee: Tianjin Hengyu Medical Technology Co ltd
Current assignee: Tianjin Hengyu Medical Technology Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-09-27
Anticipated expiration: 2032-04-27

Abstract

The utility model provides an intravascular ultrasound catheter with device of making an uproar falls, including interface unit, wire and imaging element be provided with on the interface unit and fall the device of making an uproar, the wire is connected and is fallen between device and the imaging element of making an uproar, interface unit is used for receiving the signal of telecommunication and conducts the signal of telecommunication to imaging element through falling the device of making an uproar, wire, imaging element includes the transducer for the mutual conversion of transmission and receipt ultrasonic signal and realization signal of telecommunication and ultrasonic signal. Adopt above-mentioned technical scheme, the utility model discloses an intravascular ultrasound catheter with noise reduction device has the interference killing feature to environments such as electromagnetic wave, and noise reduction device makes and can guarantee the normal transmission of signal more easily, compares in prior art and carries out the mode of handling through computer software to signal noise, falls at the source that the signal obtained and makes an uproar, has reached better noise reduction effect.

Description

Intravascular ultrasound catheter with noise reduction device

Technical Field

The utility model relates to an intravascular ultrasound catheter with noise reduction device belongs to intravascular ultrasound equipment technical field.

Background

With the development of interventional medical devices, more and more medical catheters are available, such as microcatheters, imaging catheters, guiding catheters, and various stents or delivery sheaths of embolic protectors, which need to enter various lumens of the human body for diagnosis and treatment of diseases. During the process of entering the human body lumen, the interventional catheter generally needs to be guided and supported by the aid of a guide wire. The intravascular ultrasonic diagnosis catheter is used for imaging the vessel wall and the vessel cavity and providing information for diagnosis. Through the ultrasonic probe arranged at the top of the catheter, the cross section image of the blood vessel is acquired in real time at 360 degrees, an observation blind area does not exist basically, the lumen area and the plaque size are measured accurately, and the plaque property is judged, so that the ultrasonic probe has important application value in diagnosis and prediction of coronary heart disease, for example, the intravascular ultrasonic imaging catheter with high resolution and long-distance detection depth disclosed in Chinese patent document CN 106974678A. The intravascular ultrasound catheter is easily interfered by the pulse of strong electromagnetic waves in the environment during the working process, thereby influencing the imaging of the catheter in the system. Common mode chokes, one of the most widely used noise reduction devices for industrial, electrical and telecommunication applications to remove or suppress common mode noise and related electromagnetic interference on power cables and signal lines, are disclosed in chinese patent document CN113439313A, for example. However, in the field of intravascular ultrasound technology, most noise elimination methods perform data processing on signals acquired by an imaging unit at the distal end of a catheter, and a common mode choke coil is not used for directly suppressing noise, so that in order to reduce the anti-interference capability of an intravascular ultrasound catheter to such environments, the catheter needs to be structurally optimized so as to generate as little noise as possible in images.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the utility model is to provide an intravascular ultrasound catheter with noise reduction device, thereby effectively restrain the interference of external factors such as environment to intravascular ultrasound imaging through set up noise reduction device on the pipe.

In order to achieve the above object, the utility model discloses an intravascular ultrasound catheter with device of making an uproar falls, including interface unit, wire and imaging element be provided with the device of making an uproar falls on the interface unit, the wire is connected and is fallen between the device of making an uproar and the imaging element, interface unit is used for receiving the signal of telecommunication and conducts the signal of telecommunication to imaging element through falling the device of making an uproar, wire, imaging element includes the transducer for the mutual conversion of signal of telecommunication and ultrasonic signal is realized to transmission and receipt ultrasonic signal.

The noise reduction device comprises an enameled wire, a magnetic core and a circuit board; the enameled wire is wound on the magnetic core, one end of the enameled wire is connected to the circuit board, and the other end of the enameled wire is connected to the interface unit; the wires are connected to the circuit board.

The conductor of the enameled wire is a round copper or aluminum wire; the insulating layer of the enameled wire is a polyester, polyurethane or polyester-imide material layer.

The enameled wire is of a twisted pair structure.

The magnetic core is made of an iron core material, a manganese core material or a nickel core material.

The enameled wires are uniformly wound on the magnetic core, the number of turns is 5-20, and the enameled wires wound on the magnetic core are not overlapped.

An interface is arranged on the circuit board, and the wire is connected to the noise reduction device through the interface.

Adopt above-mentioned technical scheme, the utility model discloses an intravascular ultrasound pipe with device of making an uproar falls has the interference killing feature to environments such as electromagnetic wave, and the device of making an uproar falls and easily makes and can guarantee the normal transmission of signal, compares in prior art and carries out the mode of handling through computer software to signal noise, falls at the source that the signal obtained and makes an uproar, has reached better noise reduction.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a noise reducing device.

Fig. 3 is a schematic structural diagram of a twisted pair of enameled wires in the noise reduction device.

Fig. 4 is a schematic diagram of a circuit board in the noise reducing device.

FIG. 5 is a graph comparing signal-to-noise ratio results for a conduit with a noise reducing structure and a conduit without a noise reducing structure.

In the figure: the noise reduction device comprises a noise reduction device 1, an interface unit 2, a lead 3, an imaging unit 4, an enameled wire 11, a magnetic core 12, a circuit board 13 and an interface 131.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the utility model provides an intravascular ultrasound catheter includes noise reduction device 1, interface unit 2, wire 3 and imaging unit 4. After receiving the electrical signal, the interface unit 2 transfers the electrical signal to the noise reduction device 1, and the electrical signal reaches the imaging unit 4 through conduction of the conducting wire 3. The imaging unit 4 includes a transducer for transmitting and receiving an ultrasonic signal, and can perform interconversion of an electric signal and an ultrasonic signal. Imaging unit 4 is through the scanning to the vascular wall, converts the ultrasonic signal who obtains into the signal of telecommunication to give noise reduction device 1 through wire 3 transmission, noise reduction device 1 can carry out noise reduction to the signal of telecommunication, gives imaging system with the signal of telecommunication through interface unit 2 transmission after the processing is accomplished, thereby effectively acquires the low formation of image of noise.

As shown in fig. 2, the noise reducing device 1 includes an enameled wire 11, a magnetic core 12, and a circuit board 13. The conductor of the enameled wire 11 is a copper wire, an aluminum wire or a round wire with good conductivity, and the insulating layer of the enameled wire 11 is made of insulating materials with good insulating properties or special properties such as polyester, polyurethane or polyesterimide. The enamel wire 11 is a twisted pair structure, as shown in fig. 3. The material of the magnetic core 12 includes an iron core material, a manganese core material, a nickel core material, and the like. The enamel wire 11 is uniformly wound on the magnetic core 12 with 5-20 turns, and the enamel wire 11 wound on the magnetic core 12 cannot have an overlapped portion. One end of the enameled wire 11 is fixed to the circuit board 13 by welding or bonding, and the other end is fixed to the interface unit by welding or bonding. When normal current in the circuit flows through the noise reduction device, the current generates reverse magnetic fields in the induction coils wound in the same phase to counteract each other; when a common mode current flows through the coil, due to the isotropy of the common mode current, an equidirectional magnetic field is generated in the coil to increase the inductive reactance of the coil, so that the coil presents high impedance and generates a strong damping effect, and the common mode current is attenuated, thereby achieving the purpose of noise reduction.

As shown in fig. 4, the circuit board 13 has 4 interfaces 131. The lead 3 is fixed to the noise reducer 1 through the interface 131 to form a passage.

As shown in fig. 5, the signal-to-noise ratio of the intravascular ultrasound catheter with the noise reducer was compared to the intravascular ultrasound catheter without the noise reducer. The unit of calculation of the peak signal-to-noise ratio is dB, and the formula of calculation is as follows:

…… （1）

wherein, P _s And P _n Representing the effective power of the signal and the noise, respectively, the calculation process may convert the effective power of the signal and the noise into a relationship between the voltage amplitudes, as shown in equation (2):

…… （2）

wherein, V _s And V _n Representing the "effective values" of the signal and noise voltages, respectively.

The utility model discloses in, calculate the intravascular ultrasonic pipe that has the noise reduction device and the signal-to-noise ratio of the intravascular ultrasonic pipe that does not have the noise reduction device through the signal of gathering raw data and the "virtual value" of noise voltage. Compared with the intravascular ultrasound catheter without the noise reduction device, the intravascular ultrasound catheter with the noise reduction device has the signal-to-noise ratio which is respectively 13.66 percent, 12.76 percent, 17.44 percent, 27.09 percent, 37.43 percent, 53.78 percent and 85.11 percent higher than that of the intravascular ultrasound catheter without the noise reduction device when the adjustment distance is 2mm, 3mm, 4mm, 5mm, 6mm, 7mm and 8mm, and has obvious noise reduction effect

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An intravascular ultrasound catheter having a noise reducing device, characterized by: including interface unit, wire and formation of image unit be provided with the device of making an uproar of falling on the interface unit, the wire is connected between the device of making an uproar of falling and the formation of image unit, interface unit is used for receiving the signal of telecommunication and conducts the signal of telecommunication to the formation of image unit through the device of making an uproar of falling, wire, the formation of image unit includes the transducer for the mutual conversion of transmission and receipt ultrasonic signal and realization signal of telecommunication and ultrasonic signal.

2. The intravascular ultrasound catheter having noise reduction apparatus of claim 1, wherein: the noise reduction device comprises an enameled wire, a magnetic core and a circuit board; the enameled wire is wound on the magnetic core, one end of the enameled wire is connected to the circuit board, and the other end of the enameled wire is connected to the interface unit; the wires are connected to the circuit board.

3. The intravascular ultrasound catheter having a noise reduction device of claim 2, wherein: an interface is arranged on the circuit board, and the wire is connected to the noise reduction device through the interface.

4. An intravascular ultrasound catheter having a noise reducing device according to claim 2 or 3, wherein: the conductor of the enameled wire is a round copper or aluminum wire; the insulating layer of the enameled wire is a polyester, polyurethane or polyester-imide material layer.

5. An intravascular ultrasound catheter having a noise reducing device according to claim 2 or 3, wherein: the enameled wire is of a twisted pair structure.

6. An intravascular ultrasound catheter having a noise reducing device according to claim 2 or 3, wherein: the magnetic core is made of an iron core material, a manganese core material or a nickel core material.

7. An intravascular ultrasound catheter having a noise reducing device according to claim 2 or 3, wherein: the enameled wires are uniformly wound on the magnetic core, the number of turns is 5-20, and the enameled wires wound on the magnetic core are not overlapped.