CN114176642B - An intravascular deflection angle testing device - Google Patents

Abstract

The invention discloses an intravascular deflection angle testing device, which relates to the technical field of vascular imaging. Specifically, it includes a phantom fixing member for fixing the phantom, an ultrasonic transducer catheter fixing component for fixing the ultrasonic transducer catheter and making the probe of the ultrasonic transducer catheter located in the phantom, and an ultrasonic transducer catheter fixing component provided in the phantom. An angle adjusting piece on the body fixing piece to make any angle between the probe and the axis of the phantom. The aim is to provide an imaging device that can be used to adjust the eccentric angle between the catheter of an intravascular ultrasound transducer and the axis of the blood vessel.

Description

An intravascular deflection angle testing device

technical field

The invention relates to the technical field of vascular imaging, in particular to an intravascular deflection angle testing device.

Background technique

For some special clinical application scenarios such as critical illness, the traditional clinical gold standard "thermodilution method" for measuring cardiac output is more invasive and has certain risks. Combining ultrasound Doppler technology and intravascular ultrasound cross-sectional measurement technology with intravascular ultrasound transducer catheters can more directly, accurately and safely monitor intraoperative cardiac output values of patients in real time.

In the process of applying the Doppler principle to measure the blood flow velocity in the actual blood vessel, the ultrasonic transducer catheter reaches the measurement position of the cardiac artery through the distal catheterization technique, and there will inevitably be a certain deflection clip between the ultrasonic beam and the central axis of the blood vessel. angle, and the inability to adjust the catheter position proximally, the existence of deflection angle is the main source of error in flow velocity measurements. Therefore, in order to accurately monitor the intraoperative real-time cardiac output value of critically ill patients, the flow velocity measurement error caused by the deflection angle must be compensated. When imaging a blood vessel with an intravascular ultrasound transducer catheter, the area of the corresponding image, the long axis of the circle, and the gray value of each point in the image will change for each angle of deflection. Corresponding to the characteristic relationship between the images, the angle-characteristic function curve can be fitted to realize the compensation of the deflection angle and accurately monitor the operation center displacement of special patients.

However, there is no imaging device that can be used to adjust the eccentric angle between the intravascular ultrasound transducer catheter and the axis of the blood vessel, so it is impossible to determine the corresponding characteristics of the obtained intravascular ultrasound images under different deflection angles. and relationship, which in turn affects subsequent accurate real-time cardiac output measurements.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide an intravascular deflection angle testing device, which aims to provide an imaging device that can be used to adjust the eccentric angle between the intravascular ultrasound transducer catheter and the axis of the blood vessel.

In order to achieve the above purpose, the present invention proposes an intravascular deflection angle test device, comprising a phantom fixing member for fixing a phantom, a phantom fixing member for fixing an ultrasonic transducer catheter, and a probe of the ultrasonic transducer catheter located in the phantom. An ultrasonic transducer catheter fixing assembly in the body, and an angle adjusting member arranged on the phantom fixing member to make any angle between the probe and the phantom axis.

In an embodiment of the present application, the dummy fixing member includes a first fixing portion connected to the angle adjusting member and having a semicircular notch, and a first fixing portion that is pressed on the first fixing portion and has a semicircular notch The second fixing part, the semicircular notch of the first fixing part and the semicircular notch of the second fixing part cooperate with each other to form a blind hole for fixing the dummy.

In an embodiment of the present application, the ultrasonic transducer catheter fixing assembly includes a lifting portion for driving the probe of the ultrasonic transducer catheter to move up and down.

In an embodiment of the present application, the ultrasonic transducer catheter fixing assembly further comprises a traverse connected to the lifting portion for driving the probe of the ultrasonic transducer catheter to move along the horizontal radial direction of the phantom. department.

In an embodiment of the present application, the ultrasonic transducer catheter fixing assembly further includes a horizontal moving part that is connected to the traverse part and drives the probe of the ultrasonic transducer catheter to approach or move away from the phantom.

In an embodiment of the present application, the ultrasonic transducer catheter fixing assembly further includes a fixing block connected to the horizontal moving part for fixing the probe of the ultrasonic transducer catheter.

In an embodiment of the present application, the fixing block is provided with a plurality of via holes arranged in a vertical direction.

In an embodiment of the present application, the diameters of the plurality of via holes are different.

In an embodiment of the present application, the phantom includes at least one of a tungsten wire target phantom, a biological tissue phantom made from a porcine cardiovascular system, and a PVA phantom containing cellular cellulose.

In an embodiment of the present application, the number of the via holes is three.

By adopting the above technical scheme, the phantom is fixed by the phantom fixing member, then the ultrasonic transducer catheter is fixed by the ultrasonic transducer duct fixing component, and the probe of the ultrasonic transducer catheter is aligned with the phantom fixed by the phantom fixing member. body to facilitate imaging between the probe of the ultrasound transducer catheter and the phantom. An angle adjustment piece is arranged at the bottom of the phantom fixing piece, and the deflection angle of the phantom body is adjusted by the angle adjustment piece, so that different angles are formed between the phantom body and the probe of the ultrasonic transducer catheter, so that the probe of the ultrasonic transducer catheter can be adjusted. Images were acquired of the simulated in-vivo ultrasound transducer at different deflection angles. It is convenient to complete the feature relationship analysis between the deflection angle and the corresponding image.

Description of drawings

The present invention is described in detail below in conjunction with specific embodiments and accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.

FIG. 2 is a schematic structural diagram of another direction of the first embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention, but not to limit the present invention.

As shown in FIGS. 1 to 2 , in order to achieve the above purpose, the present invention proposes an intravascular deflection angle test device, which includes a phantom fixing member for fixing the phantom, a phantom fixing member for fixing the ultrasound transducer catheter 20 and making all the phantoms fixed. The probe of the ultrasonic transducer catheter 20 is located in the ultrasonic transducer catheter 20 fixing assembly in the phantom body and is arranged on the phantom fixture to make any angle between the probe and the phantom axis. Angle adjuster 14 .

Specifically, an intravascular deflection angle testing device includes a dummy fixing member, a fixing component of an ultrasonic transducer catheter 20 , and an angle adjusting member 14 .

Among them, the imitation body fixing member, the ultrasonic transducer catheter 20 fixing component, and the angle adjusting member 14 are all made of metal materials, such as aluminum alloy materials, alloy steel materials, etc., and the above-mentioned components made of metal materials have supporting Strong ability and wear resistance. Of course, according to the needs of the design, it can also be made of plastic materials. The above-mentioned components made of plastic materials have the advantages of low cost, light weight, and easy production.

The imitation body fixing part is a cube, and a circular blind hole for placing the imitation body is arranged on it.

The ultrasonic transducer catheter 20 fixing component is used for fixing the ultrasonic transducer catheter 20, and the probe of the ultrasonic transducer catheter 20 is facing the center of the phantom, so as to facilitate imaging between the probe and the phantom.

The angle adjustment member 14 is connected to the imitation body fixing member, and the angle adjustment member 14 is a manually adjusted angle adjustment member 14 with a precise scale. The angle adjusting member 14 and the imitation body fixing member are connected by means of fixed connection, and the connection by means of fixed connection can improve the stability of the connection between the angle adjusting member 14 and the angle adjusting member 14 . Of course, according to design requirements, the angle adjustment member 14 and the dummy fixing member can also be connected in a detachable manner, such as snap connection, screw connection and the like. The connection in a detachable manner facilitates the installation and disassembly between the angle adjusting member 14 and the imitation body fixing member, and facilitates later maintenance.

An intravascular deflection angle testing device further includes a bottom plate 15 disposed at the bottom, and the ultrasonic transducer catheter 20 fixing component and the angle adjusting member 14 are both connected to the bottom plate 15 .

Using the above technical solution, the phantom is fixed by the phantom fixing member, and then the ultrasonic transducer catheter 20 is fixed by the ultrasonic transducer duct 20 fixing component, and the probe of the ultrasonic transducer duct 20 is aligned with the phantom fixing member. The fixed phantom facilitates imaging between the probe of the ultrasound transducer catheter 20 and the phantom. An angle adjustment member 14 is arranged at the bottom of the phantom fixing member, and the deflection angle of the phantom is adjusted by the angle adjustment member 14, so that different angles are formed between the phantom and the probe of the ultrasonic transducer catheter 20, so that the ultrasonic transducer The probe of the catheter 20 acquires images of the simulated in-vivo ultrasound transducer at different deflection angles. It is convenient to complete the feature relationship analysis between the deflection angle and the corresponding image.

In an embodiment of the present application, the dummy fixing member includes a first fixing portion 12 connected to the angle adjusting member 14 and having a semicircular notch, and a first fixing portion 12 that is press-fitted on the first fixing portion 12 and has a The second fixing portion 11 with a semicircular notch, the semicircular notch of the first fixing portion 12 and the semicircular notch of the second fixing portion 11 cooperate with each other to form a blind hole for fixing the dummy.

Specifically, the dummy fixing member includes a first fixing portion 12 and a second fixing portion 11 .

The first fixing portion 12 is connected to the angle adjusting member 14 and can be rotated under the control of the angle adjusting member 14 . The first fixing portion 12 is provided with a semi-circular notch, and the semi-circular notch is provided on a side away from the angle adjusting member 14 .

The second fixing portion 11 is press-fitted on the first fixing portion 12 , and a semicircular notch is provided on the second fixing portion 11 . Blind holes in the body.

By dividing the dummy fixing part into a first fixing part 12 and a second fixing part 11, the second fixing part 11 is detachably connected to the first fixing part 12, when the dummy needs to be fixed, the second fixing part 11 Remove, and then place the imitation body at the semicircular notch of the first fixing part 12. After the placement is completed, then press the second fixing part 11 on the first fixing part 12 to complete the fixing of the imitation body. The structure is simple, Easy to implement.

It is conceivable that between the first fixing portion 12 and the angle adjusting member 14, a stand 22 can also be provided, and the height of the first fixing portion 12 can be adjusted by disposing the stand 22.

In an embodiment of the present application, the ultrasonic transducer catheter 20 fixing assembly includes a lifting portion 16 for driving the probe of the ultrasonic transducer catheter 20 to move up and down.

Specifically, the fixing assembly of the ultrasonic transducer catheter 20 includes a lifting portion 16 connected to the bottom plate 15,

One side of the lifting part 16 is provided with a manual knob, and the height of the lifting part 16 can be adjusted by the manual knob, so as to realize the adjustment of the position of the ultrasonic transducer catheter 20 in the vertical direction, so as to facilitate the realization of the ultrasonic transducer catheter 20. Alignment between probe and phantom.

In an embodiment of the present application, the ultrasonic transducer catheter 20 fixing assembly further includes a probe connected to the lifting portion 16 for driving the ultrasonic transducer catheter 20 to move along the horizontal radial direction of the phantom. The traverse portion 17.

Specifically, the ultrasonic transducer catheter 20 fixing assembly further includes a traverse portion 17, through which the probe of the ultrasonic transducer catheter 20 can be driven to move horizontally along the radial direction of the phantom, so as to facilitate the realization of the ultrasonic transducer catheter 20 of the alignment between the probe and the phantom.

In an embodiment of the present application, the ultrasonic transducer catheter 20 fixing assembly further includes a probe connected to the traverse portion 17 and driving the ultrasonic transducer catheter 20 to be close to or away from the level of the phantom. moving part 18 .

Specifically, the ultrasonic transducer catheter 20 fixing assembly further includes a horizontal moving part 18 that makes the probe of the ultrasonic transducer catheter 20 close to or away from the dummy. The distance between the bodies improves the flexibility of the intravascular deflection angle testing device.

In an embodiment of the present application, the ultrasonic transducer catheter 20 fixing assembly further includes a fixing block 19 connected to the horizontal moving part 18 for fixing the probe of the ultrasonic transducer catheter 20 .

Specifically, the ultrasonic transducer catheter 20 fixing assembly further includes a fixing block 19 for fixing the probe of the ultrasonic transducer catheter 20, the fixing block 19 is fixedly connected to the horizontal moving part 18, and the fixed connection can improve the fixing Stability between the block 19 and the horizontal moving part 18 .

By adopting the above technical solution, by arranging the fixing block 19 on the horizontal moving part 18, the fixing of the phantom is facilitated, and the efficiency of fixing the phantom is improved. It is convenient to use the deflection angle test device in the blood vessel.

In an embodiment of the present application, the fixing block 19 is provided with a plurality of via holes 21 arranged in a vertical direction.

Specifically, the fixing block 19 is provided with a plurality of via holes 21 arranged in a vertical direction, and the axial direction of the via holes 21 and the axial direction of the full holes are parallel to each other.

By arranging a plurality of through holes 21 on the fixing block 19, the probes of the plurality of ultrasonic transducer catheters 20 can be inserted simultaneously, the backup of the probes of the plurality of ultrasonic transducer catheters 20 can be realized, and the device for testing the deflection angle of the blood vessel is improved. applicability.

In an embodiment of the present application, the diameters of the plurality of vias 21 are different.

Specifically, the diameters of the plurality of vias 21 are all different, which can realize the adaptation of the probes of the ultrasonic transducer catheters 20 of different diameters, and improve the performance of the intravascular deflection angle test device for different ultrasonic transducer catheters 20. Probe Compatibility.

In an embodiment of the present application, the phantom includes at least one of a tungsten wire target phantom, a biological tissue phantom made from a porcine cardiovascular system, and a PVA phantom containing cellular cellulose.

In an embodiment of the present application, the number of the via holes 21 is three.

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. The intravascular deflection angle testing device is characterized by comprising a dummy fixing piece used for fixing a dummy, an ultrasonic transducer catheter fixing assembly used for fixing an ultrasonic transducer catheter and enabling a probe of the ultrasonic transducer catheter to be located in the dummy, and an angle adjusting piece arranged on the dummy fixing piece and enabling the probe and the axis of the dummy to form any angle.

2. The intravascular deflection angle testing device of claim 1, wherein the dummy fixture includes a first fixture portion connected to the angle adjustment member and having a semicircular notch, and a second fixture portion press-fitted onto the first fixture portion and having a semicircular notch, wherein the semicircular notch of the first fixture portion and the semicircular notch of the second fixture portion cooperate to form a blind hole for fixing the dummy.

3. The intravascular deflection angle testing device of claim 1, wherein the ultrasound transducer catheter securement assembly includes a lift for driving a probe of the ultrasound transducer catheter up and down.

4. The intravascular deflection angle testing device of claim 3, wherein the ultrasound transducer catheter securement assembly further includes a traversing portion coupled to the lifting portion for driving a probe of an ultrasound transducer catheter to move along the horizontal radial direction of the phantom.

5. The intravascular deflection angle testing device of claim 4, wherein the ultrasound transducer catheter securement assembly further includes a horizontally movable portion coupled to the traversing portion and driving a probe of the ultrasound transducer catheter closer to or away from the phantom.

6. The intravascular deflection angle testing device of claim 5, wherein the ultrasound transducer catheter securement assembly further comprises a securement block coupled to the horizontally movable portion for securing a probe of an ultrasound transducer catheter.

7. The intravascular deflection angle testing device of claim 6, wherein the fixing block is provided with a plurality of through holes arranged along a vertical direction.

8. The intravascular deflection angle testing device of claim 7, wherein the plurality of vias are all of different diameters.

9. The intravascular deflection angle testing device of claim 1, wherein the mimic comprises at least one of a tungsten filament target mimic, a biological tissue mimic made of porcine cardiovascular, and a PVA mimic containing cellullose.

10. The intravascular deflection angle testing device of claim 7, wherein the number of vias is three.

Images